Hsieh Su-wei

 ( 1986 Births ) 

The following year, Hsieh once again failed to qualify for either the Australian or US Opens, but qualified for the main draw at both the French Open and Wimbledon, where she lost in the first round both times. In doubles, she fell in the first round at three of the Grand Slam events, but made it to the second round at the French Open. Hsieh made a breakthrough though in doubles, starting with reaching two finals in Auckland and Bangalore in the first two months of the year with different partners. She then earned the biggest wins of her career with compatriot Chuang Chia-jung as the pair won the China Open, a Tier II tournament. This marked Hsieh's first title of any kind on the WTA Tour. They won a second title together the following week at the Korea Open, where she had reached her first WTA final three years earlier. She once again performed well on the ITF Circuit level, winning a pair of titles in both singles and doubles. While she finished the year ranked No. 143 in singles, she snagged her first year-end top 50 ranking in doubles, by finishing No. 46 in the world.

In March, Hsieh played at Indian Wells, losing in the first round to Elena Vesnina in three sets. A week later, she lost again, this time in the first round of qualifying, to Tatiana Poutchek in Miami. These two defeats saw her ranking fall to No. 116.

At the end of April, Hsieh entered the ITF tournament in Incheon as the first seed, and won the tournament, defeating Chinese player Xie Yanze in three sets. As a result of this win, her ranking rose to No. 99. At the French Open, she was defeated by qualifier Anastasiya Yakimova in the first round.

In June, she had her best Wimbledon ladies' singles result to date by making it to the second round. She beat Stéphanie Cohen-Aloro in the first round, claiming her first victory in her third main draw appearance at Wimbledon, before falling to No. 9 seed and French Open runner-up Dinara Safina.

At the Cincinnati Open, Hsieh lost in the first round in singles, but made it to the finals in doubles with Kazakh partner Yaroslava Shvedova. However, the pair were topped by the Russian duo of Maria Kirilenko and Nadia Petrova in a third set super-tiebreak. She then went on to record her first main-draw win at the US Open over Evgeniya Rodina before losing to Petrova in the second round. Hsieh then managed to end the year strong by winning the Bali International with Peng Shuai, and defending her title in Korea with compatriot Chuang. She finished the year ranked inside the top 100 in singles for the first time, at No. 79, and No. 53 in doubles.

Despite struggling the rest of the year in singles, winning just one WTA Tour main-draw match at the Guangzhou International later on in September, Hsieh put together her most prolific year in doubles thus far. After a pair of early exits in Indian Wells and Stuttgart, Hsieh and Peng advanced to the final of the Italian Open, a Premier-5 tournament, where they were seeded seventh. They then defeated the fifth seeds Daniela Hantuchová and Ai Sugiyama to win the title. This was Hsieh's sixth WTA doubles title, and the biggest of her career thus far. After making the quarterfinals in Madrid, Hsieh broke into the top 20 in doubles for the first time. She concluded her clay-court season by partnering with Peng at the French Open. Seeded ninth, the two posted three easy straight set wins, including their second in a month over Hantuchová and Sugiyama, to advance to the quarterfinals. Despite being a set down, the pair managed to come back and grind out a three set win over the Polish sister duo Agnieszka and Urszula Radwańska, advancing Hsieh to her first major semifinal, However, Hsieh and Peng were beaten by Victoria Azarenka and Elena Vesnina in straight sets. Nonetheless, their strong performance lifted Hsieh inside the top 15 in doubles.

Hsieh and Peng struggled following their Roland Garros run, losing five of their next seven matches, including an opening round loss at Wimbledon, their only grass-court tournament, and a second round defeat at the US Open. Hsieh was successful though in mixed doubles at both majors, partnering Zimbabwe's Kevin Ullyett en route to a Wimbledon quarterfinal and US Open semifinal. However, the duo were able to come together at their final tournament of the year, the China Open, where they won the title without dropping a set. This was their third title of the year together, Hsieh's seventh career doubles title, her first Premier Mandatory title, and the biggest of her career. Following this result, she made her top-10 debut in the doubles rankings. She finished the year ranked No. 9 in the world in doubles.

At Wimbledon, she reached the semifinals of mixed doubles, with Australia's Paul Hanley. Partnering Zheng Jie, she won the doubles event at the Guangzhou International.

Playing primarily on the ITF Circuit for singles in 2011, Hsieh won three titles, a $25k in Mildura, a $75k in Beijing, and a $25k in Seoul, while also finishing as the runner-up at the $25k in Fergana. She also reached the quarterfinals at the Australian Open with Chuang, falling to Azarenka and Kirilenko, and won one WTA doubles title in Guangzhou with Zheng Saisai, her eighth career title and first in two years.

Hsieh began the grass-court season by reaching the quarterfinals at the 75k event in Nottingham, falling to American CoCo Vandeweghe. She then reached her first singles quarterfinal at a WTA Tour grass-court event in Birmingham, where she was beaten by Ekaterina Makarova. She also won the doubles title with Tímea Babos over the world No. 1's, Americans Lisa Raymond and Liezel Huber, her first grass-court doubles title. Entering Wimbledon ranked inside the top 70, Hsieh scored her first win at the All England Club in four years by defeating French wildcard Virginie Razzano, who just a month earlier at the French Open became the first player ever to beat Serena Williams in the opening round of a Grand Slam tournament, in straight sets. She followed it up with a win over Stéphanie Foretz Gacon to advance to the third round of Wimbledon for the first time, and beyond the second round of a major for the first time since the 2008 Australian Open. Though she would lose at this stage to then-world No. 1 and recent French Open winner, Maria Sharapova, in straight sets, this marked Hsieh's best performance at a major in four and a half years. She also reached the quarterfinals in the mixed doubles tournament, partnering with British player Colin Fleming. Following Wimbledon, she reached a new career-high singles ranking of world No. 56.

At the Summer Olympics, she represented Taiwan in the women's singles tournament and in women's doubles with Chuang Chia-jung. Although she was knocked out in the first round of the singles tournament by her close friend and partner Peng Shuai, she and Chuang reached the quarterfinals in doubles, where they were beaten by the eventual silver medalists Andrea Hlaváčková and Lucie Hradecká.

Hsieh got off to a slow start to the summer hardcourt season. She played just one tournament between the Olympics and the US Open, the Texas Open. In singles, she was beaten by eventual champion Roberta Vinci in the first round, while falling in the quarterfinals of the doubles tournament with partner Gabriela Dabrowski to Iveta Benešová and Barbora Záhlavová-Strýcová. At the US Open, she suffered a three-set loss in singles to Magdaléna Rybáriková in the first round, but was successful in the women's doubles tournament with partner Anabel Medina Garrigues, where they reached the semifinals. Hsieh piled together a hugely successful Asian hardcourt season following the Open, winning 17 of her last 21 matches. She won the Ningbo Challenger, a $100k tournament, defeating Zhang Shuai in the final. The next week, she reached the final at the Guangzhou International Open dropping just one set en route. Facing the 17-year old Brit Laura Robson, the silver medalist in mixed doubles with Andy Murray at the 2012 Olympics who had defeated both four-time Grand Slam Champion Kim Clijsters and 2011 French Open champion Li Na, en route to the fourth round at the US Open less than a month earlier, Hsieh played the most intense tennis match of her life. Despite being 0–2 down in each of the first two sets, having five match points saved in the second set, the match being suspended after the second set due to the excruciatingly hot temperatures, and then being 0–3 down in the final set, she fought back to win the title in three sets. This marked Hsieh's second WTA Tour singles title of the year, and with it she jumped into the top 50 of the singles rankings for the first time, at No. 39. Though her 10-match winning streak was snapped in her very next match at the Pan Pacific Open, she won another $100k singles title two weeks later at the Suzhou Open, her 23rd career ITF singles title. This brought her into the top 25 for the first time, becoming the first Taiwanese tennis player to achieve a ranking that high. Hsieh concluded her season at the Tournament of Champions, where she was invited to compete for the first time. She lost her first two matches to Caroline Wozniacki and Vinci, but ended her year on a high note with a three-set victory over Hantuchová. Hsieh finished with her best year-end ranking to date, world No. 25 in singles, a ranking which she equaled in doubles.

Hsieh entered the Pattaya Open but lost to Marina Erakovic in the first round. She then lost in the second round in Doha and Dubai. As the defending champion in Kuala Lumpur, Hsieh was seeded second and advanced to the quarterfinals with wins over Kurumi Nara and Zhang Shuai. However, she lost in the quarterfinals to eventual finalist Bethanie Mattek-Sands, and her ranking fell from No. 23 to No. 35. Hsieh then fell in the second round of the Indian Wells Open to American Jamie Hampton. However, she and Peng reached the semifinals of the doubles tournament, defeating the No. 1 ranked team of Sara Errani and Roberta Vinci in the second round. She was defeated in the second round of the singles tournament at the Miami Open, but was less successful in doubles this time around, falling in the second round to the wildcard pairing of Kuznetsova and Pennetta.

During the clay-court season, she fell in first round of the Madrid Open, Italian Open, and French Open and the second round of the Internationaux de Strasbourg in singles, but won the Italian Open with Peng, her tenth career doubles title. While Hsieh would struggle throughout the rest of the season on the singles court, winning five of her next eighteen matches, and her best results being second round showings at the next two major events, her Italian Open title sparked the beginning of what would go on to be a remarkable run of doubles titles and domination over the next twelve months. After a disappointing second-round loss at the French Open, and quarterfinal losses at both grass-court warm-up tournaments, Hsieh and Peng came into Wimbledon as the dark horse candidates for the title. Seeded eighth, the pair whizzed through to the final with the loss of just one set, and without having to face a single seeded team. Facing the 12th seeded Australian duo of Ashleigh Barty and Casey Dellacqua, they won the title in two sets. This was Hsieh's first Grand Slam title, making her the first Taiwanese tennis player to ever win one in any discipline. It also meant she would return to the top 10 rankings for the first time since January 2010.

Peng and Hsieh opened their summer hardcourt partnership with a victory at the Premier 5 Cincinnati Open, defeating Anna-Lena Grönefeld and Peschke in the final. After an opening-round loss in New Haven, and a defeat at the hands of Sania Mirza and Zheng Jie at the US Open, the pair won their fourth title of the year at the Guangzhou International Open and Tour Championships. After posting back-to-back semifinal finishes at the Pan Pacific Open and China Open, Hsieh qualified with Peng for the Tour Championships for the first time in her career. Seeded second, they defeated Nadia Petrova and Katarina Srebotnik in the semifinals and Ekaterina Makarova and Elena Vesnina in the final to win the year-ending championships, and their fifth title of 2013. By virtue of this win, Hsieh and Peng became the first Asian players to ever win a season-ending tennis championship. She finished her doubles season ranked No. 3 in the world, while her singles ranking dropped 60 places from 2012 down to No. 85.

Hsieh's singles season ended disappointing with numerous first-round losses and only five second round showings in Eastbourne International, Wimbledon, US Open, Guangzhou International and Luxembourg Open.

At Doha, Hsieh won her first doubles title with Peng Shuai in 2014 and reached a career-high of world No. 2 in doubles. Later in May, on the occasion of her semifinal run in doubles at the Madrid, Hsieh shared the No. 1 ranking with Peng for at least a week, becoming the first individual in Taiwan to hold the  1 ranking in tennis, whether in singles or doubles, male or female. However, she failed to defend her title with Peng in Italian Open by losing to Medina Garrigues and Shvedova in the second round in straight sets.

With doubles competition in the way, Hsieh missed all the singles events during the clay season except French Open, where she lost in the first round of qualifying. In doubles, she came through one of the more difficult doubles draws with Peng by defeating unseeded Svetlana Kuznetsova and Sam Stosur in the first round in straight sets, breezed through former No. 1, 15th seeds Liezel Huber and Lisa Raymond in the third round, grinded three sets with fifth seed Sania Mirza and Cara Black in the quarterfinals and Garbiñe Muguruza and Carla Suárez Navarro, whom they lost to in Madrid, in the semifinals and defeated second seed Errani and Vinci in the final in straight sets for their second Grand Slam title. They were unable to defend their title at Wimbledon though, falling in the third round to eventual runners-up Tímea Babos and Kristina Mladenovic despite winning the first set. They also lost in the third round at the US Open to the team of Kimiko Date and Barbora Záhlavová-Strýcová. Their best result throughout the remainder of the year came at the WTA Finals in Singapore. They easily won their first two matches, but were thrashed in the final round by Cara Black and Sania Mirza, winning just one game. While Hsieh finished the year No. 144 in singles after a difficult year in which she won only seven main draw WTA Tour matches, she finished ranked No. 5 in the world for doubles, her second straight top five finish.

Hsieh still managed to put together a decent string of results on the doubles circuit. Partnering Sania Mirza, they reached the final at the Premier event in Doha before falling to the American duo of Raquel Atawo and Abigail Spears. After the tournament in Doha, she started a new partnership with Flavia Pennetta. Despite getting off to a slow start with early exits in Indian Wells and Miami, the duo found more success during the clay-court season, reaching the quarterfinals in Madrid and Rome. Entering the French Open as a defending champion, Hsieh and Pennetta quickly progressed to the quarterfinals, but were undone in three sets by Hlaváčková and Hradecká. As a result of not defending her points, she dropped out of the top 10 for the first time in nearly two years. The two followed up with another quarterfinal appearance at Wimbledon, where they lost in three sets to Babos and Mladenovic, but dissolved their partnership following the grass-court season.

Entering the summer hardcourt season, Hsieh reunited with her friend Chuang Chia-jung, whom she would spend the majority of the rest of the season playing with. Their first tournament back was at the Cincinnati Open, where they reached the semifinals. En route, she was able to get revenge on Babos and Mladenovic, who had beaten her at Wimbledon, with a win over the pair in the quarterfinals. Hsieh decided to play with Anastasia Rodionova, though, instead of Chuang at the US Open. The pair, seeded tenth, were upset in the second round by Anna-Lena Grönefeld and CoCo Vandeweghe. She also played mixed doubles with Henri Kontinen, where they reached the quarterfinals. Hsieh played two more tournaments with Chuang, the inaugural Dongfeng Motor Open in Wuhan and in Beijing, but they lost both opening round matches. She finished the year ranked No. 107 in singles and No. 26 in doubles.

Hsieh also struggled remarkably with doubles during the year, failing to make a single quarterfinal at tour-level. Her best result on tour came in a third round appearance at the Australian Open, also marking the first time since 2010, she failed to advance to the quarterfinals in at least one of the Grand Slam tournaments. As a result, she dropped down to playing primarily on the ITF Circuit for most of the season, where she managed to win the doubles title in Marseille, a 10k title in Porto, and finishing runner-up in the doubles draw in Dubai. While results managed to keep her inside the top 100, nonetheless, her year-end ranking of No. 96 marked her worst finish in ten years.

After a difficult 2016, Hsieh also managed to recapture some of her strong doubles form. Partnering Oksana Kalashnikova, they won the Budapest Grand Prix in February, her 18th career doubles title, and her first since winning the French Open in 2014. Throughout the season, she played alongside a multitude of different female players, but found the most success working with Monica Niculescu. With the Romanian, they won inaugural version of the Swiss Ladies Open in April, reached the final of the Cincinnati Open, and reached the third round of the US Open. Additionally, she won a 100k doubles title in May at Cagnes-sur-Mer with Chang Kai-chen, her 23rd ITF doubles title, and the WTA 125 doubles title in Hawaii in November with her younger sister Hsieh Shu-ying. She finished the year ranked No. 32 in doubles, a very substantial improvement from the previous year.

After the Australian Open, Hsieh had a relatively quiet rest of the early hardcourt season singles-wise. After losing the qualifying rounds in Doha and Dubai, and a second-round loss at the Oracle Challenge, Hsieh qualified into the main draw at Indian Wells and progressed to the second round. Her best result came at the Miami Open where she advanced to the third round for the first time, losing to Karolína Plíšková. She had a very successful doubles performance, though, reaching the final in Dubai with Peng, and winning the Indian Wells title with Barbora Strýcová, her 20th career WTA doubles title. This victory put her back in the top 20 of the doubles rankings.

The clay-court season delivered mixed results for Hsieh. While she notched a couple of good singles placements, reaching the semifinals at the Morocco Open and the quarterfinals in Strasbourg, she didn't do as well in doubles, falling in the second round in Madrid and Rome, and the first round at the French Open for both singles and doubles.

Hsieh played two grass-court warm-up tournaments before Wimbledon. In Mallorca, she suffered two first-round losses, to Caroline Garcia in singles, and Anastasia Rodionova and Nadiia Kichenok in doubles, but fared better in Eastbourne with a third-round appearance in singles and the semifinals in doubles. Her singles performance was enough to push her ranking inside the top 50 for the first time since September 2013. Unseeded and placed in a very difficult top quarter, Hsieh opened up her Wimbledon campaign with a first round win over Anastasia Pavlyuchenkova, followed by a straight sets victory over Lara Arruabarrena to advance to the third round at Wimbledon for the first time in six years. She then recorded the biggest victory of her career by upsetting world No. 1, Simona Halep, who had just won the French Open four weeks earlier, in a tight three-setter where she came from a set down and saved match points, thus advancing to her second Grand Slam fourth round of the year, and her first-ever outside of the Australian Open. She lost her next match to Dominika Cibulková in straight sets. She didn't fare quite as well in doubles, losing in the third round. Nonetheless, her singles performance saw her return inside the top 40.

In the US Open Series, Hsieh played in the qualifying rounds for two tournaments, the Cincinnati Open and New Haven Open, but failed to qualify to the main draw in either. Despite a first-round doubles loss in Cincinnati, she reached the doubles final in New Haven with partner Laura Siegemund, but they were beaten by Andrea Sestini Hlaváčková and Strýcová. Hsieh next participated at the US Open, where she reached the second round in singles and the third round in doubles.

Hsieh continued her amazing comeback at her next tournament, the Japan Women's Open. Seeded second, she defeated Polona Hercog, Mandy Minella, Ajla Tomljanović, and Wang Qiang en route to the final. Facing 17-year old American Amanda Anisimova, one of the youngest players on tour, Hsieh defeated the young upstart in straight sets to win her third career singles title, and her first in six years. As a result of her victory, her singles ranking returned inside the top 30 since February 2013. At the Korea Open immediately after, Hsieh reached the semifinals in the singles tournament before falling to Tomljanović, and made the doubles final with her sister Hsieh Yu-chieh, but they fell to the all-Korean team of Choi Ji-hee and Han Na-lae. The remainder of Hsieh's results for the season were uneventful, except for another semifinal singles appearance at the Tianjin Open, where she was beaten again by Garcia. Thanks to her renaissance career year in singles, consistent results, and the withdrawals of a few higher-ranked players, Hsieh was invited to serve as the second alternate to the Elite Trophy, which she accepted, although she did not end up competing. She finished the year ranked No. 28 in singles, her best finish since 2012, and No. 17 in doubles.

After early-round losses at the Thailand Open in singles and the Qatar Open in singles and doubles, Hsieh regained her form at the year's first Premier-5 event, the Dubai Championships. Unseeded in the singles draw, she breezed past tenth seed Anastasija Sevastova in the first round and Aliaksandra Sasnovich in the second round. She had a huge upset in the third round by defeating former world No. 1 and reigning Wimbledon champion, Angelique Kerber, in three sets. In the quarterfinals, she posted another comeback three-set win over the fourth seed Karolína Plíšková, winning the last six games in a row after being down 5-1 and on a nine-game losing streak in the final set to advance to her first Premier-5 semifinal. Facing Kvitová for the second time in two months, she was unable to get revenge on the Czech and lost in three sets despite winning the first. Hsieh also played doubles in Dubai, reuniting with Barbora Strýcová. Seeded third, the pair went on to win the title defeating Lucie Hradecká and Ekaterina Makarova in the final in two sets. She next played at Indian Wells, losing her only singles match to Johanna Konta and reaching the quarterfinals in doubles. Seeded 27th at the Miami Open, Hsieh defeated Alison Riske in her first match to set up a rematch with Osaka in the third round. This time, it was Hsieh who came back from both a set down and a service break down in the second and third sets to upend the Australian Open champion, her second victory over a world No. 1 in the last twelve months. She continued her great run by defeating former world No. 1 and 13th seed, Caroline Wozniacki, in the fourth round to advance to her first Premier Mandatory quarterfinal, where her tournament came to an end against the 21st-seeded Estonian Anett Kontaveit.

Hsieh had a quiet clay-court season in singles, her best result coming in Morocco where she reached the quarterfinals. However, she continued her doubles success with Strýcová as the pair won their second Premier Mandatory doubles title at the Madrid Open, defeating Gabriela Dabrowski and Xu Yifan in the final. She concluded her clay-court season at the French Open. Seeded 25th in singles, Hsieh was defeated by 2014 French Open semifinalist Andrea Petkovic in the second round. In doubles, she was seeded third with Strýcová, but they were upset in the third round by Lyudmyla Kichenok and Jeļena Ostapenko.

During the early grass-court season events, Hsieh and Strýcova won their third doubles title of the year at the Birmingham Classic. At Wimbledon, they reached their first major final as a pair by defeating Elise Mertens and Aryna Sabalenka, who won the Sunshine Double earlier that year, in the quarter- and the top seeded team of Babos and Mladenovic in the semifinals. They then defeated Dabrowski and Xu to win their first major together, without dropping a set. This gave Hsieh her second Wimbledon title, and third Grand Slam title overall. She also posted another solid result in singles, reaching the third round before falling to Plíšková.

During the summer hardcourt season, Hsieh struggled in both singles and doubles. Her best showings came in singles at the Washington Open, where she lost to young American Caty McNally in the quarterfinals, and the third round of the Premier 5 Cincinnati Open, losing to Osaka in three sets in the pairs third meeting of 2019. At the US Open, she lost to Wimbledon quarterfinalist Karolína Muchová in the second round in singles, while in doubles she and Strýcová were beaten in the third round by Kichenok and Ostapenko. Nonetheless, Hsieh and Strýcová became the first doubles team to qualify for the 2019 WTA Finals during the US Open.

Hsieh posted mixed results during the Asian hardcourt season for singles and doubles. Her best singles result came at the Japan Women's Open, where she was the defending champion and the number-one seed for the first time in a WTA Tour singles tournament in her career. However, she was upset by Nao Hibino in the quarterfinals. In doubles, she made the final of the Pan Pacific Open with her sister Hsieh Yu-chieh, where they were beaten by fellow-Taiwanese siblings Latisha Chan and Chan Hao-ching. However, she and Strýcová came into the WTA Finals on a three-match losing streak after posting consecutive first-round losses in Wuhan and Beijing. Seeded second, the pair dropped their opening match to Dabrowski and Xu, but beat Barbora Krejčíková and Kateřina Siniaková, and Stosur and Zhang in their next two matches to finish first in the Purple Group. They defeated the No. 8 seeds, Anna-Lena Grönefeld and Demi Schuurs, in the semifinals, but were beaten by the defending champions, Babos and Mladenovic, in the final. Hsieh finished the year ranked No. 32 in singles and No. 4 in doubles, her first top 10 finish since 2014.

At Wimbledon, Hsieh and Mertens won the doubles title for the third time, beating Veronika Kudermetova and Elena Vesnina in the final, after saving two championship points.

In Indian Wells, Hsieh and Mertens won the doubles title, defeating Kudermetova and Elena Rybakina in the final. It was Hsieh's third Indian Wells doubles title, each with a different partner, and her 12th WTA 1000 title overall. Following Indian Wells, she returned to No. 1 in doubles (since September 2021).

Hsieh and Mertens qualified for the WTA Finals in doubles. They reached the final, but lost to Krejčíková and Siniaková, in straight sets. Hsieh finished the year ranked world No. 3 in doubles.

Before the WTA Finals, she wrote on her Facebook page that she was taking an extended break after the Finals to heal an injury.

In her fourth tournament back, she and Wang joined to play the French Open. The pair upset defending champion Kristina Mladenovic, who was playing with Zhang Shuai this year in the second round, then beat fifth seeds Desirae Krawczyk and Demi Schuurs in the third round. In the quarterfinals, they beat Veronika Kudermetova and Liudmila Samsonova to advance to the semifinals. There, they beat sixth seeds Nicole Melichar-Martinez and Ellen Perez to advance to their first final as a pair, and Hsieh's first final since her return to tennis. In the final, they came back from a one-set deficit to win the title, beating Fernandez and Townsend in three sets. This was Hsieh's second French Open doubles crown, her fifth Grand Slam title overall, and her 31st career doubles tournament win. After the tournament, Hsieh's ranking skyrocketed from 286th to No. 29 in the world.

On July 16, Hsieh won her fourth Wimbledon doubles title with Strýcová by defeating Storm Hunter and Elise Mertens in the final.

At the same tournament, she reached for the first time a final in mixed doubles. With Jan Zieliński, she won her first mixed-doubles title defeating second seeds Desirae Krawczyk and Neal Skupski. They saved a championship point en route to Hsieh's seventh major title (and her first on hardcourts) and Zieliński's first. Zieliński became the first Polish champion and finalist at a mixed-doubles event. She also reached the final in doubles with former partner Elise Mertens, defeating third-seeded pair of current world No. 1, Storm Hunter, and former world No. 1 and defending champion, Katerina Siniaková. In the final, they defeated Jeļena Ostapenko and Lyudmyla Kichenok for her eighth major title.

In March, after announcing her retirement in singles at the majors, Hsieh participated in the singles qualifying competition at the WTA 1000 Indian Wells Open, using protected ranking. At the same tournament with Mertens, she won the doubles title for the fourth time, her 34th title overall, defeating former world No. 1 players, Hunter and Siniaková. She reached the mixed-doubles semifinals at the French Open with Zieliński where they lost to Desirae Krawczyk and Neal Skupski.

In June, Hsieh and Mertens won the Birmingham Classic, defeating Miyu Kato and Zhang Shuai in the final. At Wimbledon, she reached another final in mixed doubles with the same partner, Jan Zieliński. They won the title, defeating Mexican duo Giuliana Olmos and Santiago González in the final.

With Tsao Chia-yi, she reached the quarterfinals at the Paris Olympics, defeating Romanian duo Irina-Camelia Begu and Monica Niculescu and Ukrainians Marta Kostyuk and Dayana Yastremska. They lost to Czech pairing, Karolína Muchová and Linda Nosková.

With Elise Mertens, Hsieh qualified for the end-of-season WTA Finals but exited in the group stages after compiling a record of one win and two losses.

Hsieh and Ostapenko entered Wimbledon as the fourth seeds, and sealed a place in the final with a win over Siniaková and Townsend, avenging her semifinal defeat against the pair at last year's event. Despite being down a set, it was Veronika Kudermetova and Elise Mertens who triumphed in the final. Hsieh then made the Canadian Open semifinals in her first appearance at the event in six years, partnering Olga Danilović.

Hsieh opted to partner with Ashlyn Krueger as opposed to Ostapenko for the US Open. They exited in the first round to 13th seeds Cristina Bucșa and Nicole Melichar-Martinez. Hsieh and Ostapenko rejoined for the China Open, where they made a run to the semifinals, before being eliminated by second-seeded Errani and Paolini, 6-4, 6-0.

At the Ningbo Open, Hsieh teamed up with Siniaková, the reigning world number one in doubles. They were upset in the semifinals by Melichar-Martinez and Samsonova.

Hsieh and Ostapenko were the sixth team to qualify for the WTA Finals, and were the only team to do so without winning a title. Despite this, they recorded a 3-0 record in group play, avenging their Wimbledon final defeat with a win over Kudermetova and Mertens, upsetting top seeds Errani and Paolini, and easing past eighth-seeded Asia Muhammad and Demi Schuurs. They could not capitalize on this momentum in the knockout rounds, as they were eliminated in the semifinals by Timea Babos and Luisa Stefani in straight sets.

Hsieh ended the year ranked ninth in doubles. She reached four finals, including two Grand Slam finals, but could not win any. She and Ostapenko decided to continue their partnership into 2026.