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Arthur Cazaux (; born 23 August 2002) is a French people professional tennis player. He has a career-high ATP singles ranking of world No. 58, achieved on 13 October 2025 and a doubles ranking of No. 430, achieved on 1 November 2021. Cazaux has won four Challenger singles titles.
Pairing Mayot again, they were also given a wildcard entry into the main doubles draw of the 2020 French Open but were defeated in the first round by Łukasz Kubot and Marcelo Melo in straight sets.
He made his Grand Slam main draw singles debut at the 2021 French Open as a wildcard where he was defeated by Kamil Majchrzak. At the same tournament, he reached the second round in doubles also as a wildcard partnering with fellow Frenchman Hugo Gaston.
He received a wildcard for the 2023 French Open. He reached the Challenger 125 final at the 2023 Nottingham Open as a qualifier, his first on grass, defeating Gabriel Diallo and fifth seed Dominik Koepfer in the semifinals without dropping a set, before losing to top seed Andy Murray in the final. As a result he reached the top 150 at No. 147 on 19 June 2023 and seventh place in the Next Gen race. The following week, he reached the semifinals of the 2023 Ilkley Trophy and reached a new career high of world No. 139 on 26 June 2023.
Ranked No. 119 in August, Cazaux made his debut at the US Open as a lucky loser, losing to eight seed Andrey Rublev in the first round. He received a wildcard for the 2023 Moselle Open.
Ranked No. 122, for his Grand Slam tournament debut at the Australian Open, Cazaux received a wildcard. He recorded his first Major win defeating Laslo Djere in five sets. In the second round, he upset world No. 8 Holger Rune in four sets. He defeated 28th seed Tallon Griekspoor in straight sets to advance to the fourth round of a Major for the first time in his career. In the fourth round, he lost to Hubert Hurkacz in straight sets. As a result, he reached the top 85 in the rankings. A week later, in Montpellier, he defeated Maximilian Marterer and reached the top 80 in the rankings. At the end February, he qualified for the Dubai Tennis Championships and defeated Lorenzo Musetti in the first round.
In June, Cazaux participated in his third French Open but lost in the first round to 29th seed Tomás Martín Etcheverry. In July, he won his first Wimbledon match by defeating Zizou Bergs in the first round in five sets with a super tiebreak. He made his Masters debut and recorded his first win at this level at the Shanghai Masters over Marin Čilić. Following the late withdrawal of top seed Jannik Sinner at the Paris Masters, Cazaux entered the main draw as a lucky loser replacement directly into the second round. He then defeated Ben Shelton in straight sets to reach the third round for the first time at a Masters level.
In July, Cazaux reached his first ATP Tour semifinal at the Swiss Open Gstaad, defeating fourth seed Tomás Martín Etcheverry in the second round. He lost in the semifinal to second seed Alexander Bublik. As a result, Cazaux reentered the top 100 on 21 July 2025. The following week, Cazaux reached his first ATP Tour final at the Generali Open Kitzbühel, entering the main draw as a special exempt. He defeated seventh seed Francisco Comesaña in the second round. and Jan-Lennard Struff in the quarterfinal. He then defeated fellow countryman Arthur Rinderknech to reach the final. As a result he returned to the top 75 in the singles rankings on 28 July 2025. In the final, he lost to Alexander Bublik for the second consecutive week.
In October, Cazaux won the Jinan Open title, defeating Mackenzie McDonald in the final. As a result he made his debut in the top 60 at world No. 58 on 13 October 2025.
| Grand Slam tournaments | |||||||||
| Australian Open | A | A | A | A | 4R | 2R | 0 / 2 | 4–2 | |
| French Open | Q1 | 1R | Q1 | 1R | 1R | 1R | 0 / 4 | 0–4 | |
| Wimbledon | NH | A | A | Q1 | 2R | 2R | 0 / 2 | 2–2 | |
| US Open | A | A | A | 1R | 2R | Q3 | 0 / 2 | 1–2 | |
| Win–loss | 0–0 | 0–1 | 0–0 | 0–2 | 5–4 | 2–3 | 0 / 10 | 7–10 | |
| ATP Tour Masters 1000 | |||||||||
| Indian Wells Masters | NH | A | A | A | Q1 | Q1 | 0 / 0 | 0–0 | |
| Miami Open | NH | A | A | A | Q1 | A | 0 / 0 | 0–0 | |
| Monte-Carlo Masters | NH | A | A | A | A | A | 0 / 0 | 0–0 | |
| Madrid Open | NH | Q2 | A | Q2 | A | A | 0 / 0 | 0–0 | |
| Italian Open | A | A | A | A | A | A | 0 / 0 | 0–0 | |
| Canadian Open | NH | A | A | A | Q2 | A | 0 / 0 | 0–0 | |
| Cincinnati Open | A | A | A | A | Q2 | 2R | 0 / 1 | 0–1 | |
| Shanghai Masters | NH | A | 2R | 2R | 0 / 2 | 2–2 | |||
| Paris Masters | Q1 | A | A | Q1 | 3R | 0 / 1 | 1–1 | ||
| Win–loss | 0–0 | 0–0 | 0–0 | 0–0 | 2–2 | 1–2 | 0 / 4 | 3–4 | |
| Grand Slam tournaments | |||||||
| Australian Open | A | A | A | A | 0 / 0 | 0–0 | |
| French Open | 1R | 2R | A | A | 0 / 2 | 1–2 | |
| Wimbledon | NH | A | A | A | 0 / 0 | 0–0 | |
| US Open | A | A | A | A | 0 / 0 | 0–0 | |
| Win–loss | 0–1 | 1–2 | 0–0 | 0–0 | 0 / 2 | 1–2 | |
| {class="wikitable" style=font-size:90% !Legend |
| Grand Slam (0–0) |
| ATP 1000 (0–0) |
| ATP 500 (0–0) |
| ATP 250 (0–1) |
| Hard (0–0) |
| Clay (0–1) |
| Grass (0–0) |
| Outdoor (0–1) |
| Indoor (0–0) |
| Loss | 0–1 | Austrian Open Kitzbühel, Austria | ATP 250 | Clay | Alexander Bublik | 4–6, 3–6 |
| {class="wikitable" style=font-size:97% !Legend |
| ATP Challenger Tour (4–5) |
| Hard (4–4) |
| Grass (0–1) |
| Win | 1–0 | Nonthaburi Challenger II, Thailand | Challenger | Hard | Omar Jasika | 7–6(8–6), 6–4 | |
| Loss | 1–1 | Nonthaburi Challenger III, Thailand | Challenger | Hard | Stuart Parker | 4–6, 1–4 ret. | |
| Win | 2–1 | Nonthaburi Challenger II, Thailand | Challenger | Hard | Lloyd Harris | 7–6(7–5), 6–2 | |
| Loss | 2–2 | Nonthaburi Challenger III, Thailand | Challenger | Hard | Sho Shimabukuro | 2–6, 5–7 | |
| Loss | 2–3 | Nottingham Open, United Kingdom | Challenger | Grass | Andy Murray | 4–6, 4–6 | |
| Loss | 2–4 | Lexington Challenger, US | Challenger | Hard | Steve Johnson | 6–7(5–7), 4–6 | |
| Win | 3–4 | Open Nouvelle-Calédonie, New Caledonia (France) | Challenger | Hard | Enzo Couacaud | 6–1, 6–1 | |
| Loss | 3–5 | Shenzhen Longhua Open, China | Challenger | Hard | Mackenzie McDonald | 4–6, 6–7(4–7) | |
| Win | 4–5 | Jinan Open, China | Challenger | Hard | Mackenzie McDonald | 6–3, 6–2 |
| {class="wikitable" style=font-size:97% !Legend |
| ITF WTT (3–3) |
| Hard (3–1) |
| Clay (0–2) |
| Loss | 0–1 | M15 Pretoria, South Africa | WTT | Hard | Alexander Donski | 6–7(3–7), 7–6(7–5), 6–7(6–8) | |
| Win | 1–1 | M15 Torelló, Spain | WTT | Hard | Quentin Robert | 4–6, 7–6(7–3), 6–2 | |
| Loss | 1–2 | M25 Meerbusch, Germany | WTT | Clay | Alexander Erler | 2–6, 6–4, 5–7 | |
| Loss | 1–3 | M25+H Bacău, Romania | WTT | Clay | Yshai Oliel | 4–6, 6–4, 4–6 | |
| Win | 2–3 | M25 Setúbal, Portugal | WTT | Hard | Rinky Hijikata | 7–5, 6–0 | |
| Win | 3–3 | M25 Quinta do Lago, Portugal | WTT | Hard | Naoki Nakagawa | 6–3, 6–4 |
| {class="wikitable" style=font-size:97% !Legend |
| ITF WTT (0–2) |
| Loss | 0–1 | M15 Torelló, Spain | WTT | Hard | Leandro Riedi | Gerard Granollers Pujol Oriol Roca Batalla | 6–7(7–9), 6–3, 9–11 | |
| Loss | 0–2 | M25 Angers, France | WTT | Clay | Titouan Droguet | Manuel Guinard Corentin Denolly | walkover |
| Loss | 2020 | Australian Open | Hard court | Harold Mayot | 4–6, 1–6 |
| 1 |
| 2024 | |||||||
| 1. | Holger Rune | 8 | Australian Open, Australia | Hard | 2R | 7–6(7–4), 6–4, 4–6, 6–3 | 122 |
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