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Yuko Hosoki (born 12 November 1968) is a Japanese former professional tennis player.
Hosoki had a best singles ranking of 167 in the world and won ten ITF doubles titles.
Her best WTA Tour performance came at the 1996 China Open, where she reached the second round of the singles and was a losing doubles finalist, partnering Kazue Takuma. She also made the second round of the 1997 Danamon Open in Jakarta, where she had a first-round upset win over fifth seed and world No. 57, Annabel Ellwood.
| Loss | Oct 1996 | China Open, Beijing | Tier IV | Hard | Kazue Takuma | Naoko Kijimuta Miho Saeki | 5–7, 4–6 |
| $25,000 tournaments |
| $10,000 tournaments |
| Loss | 1. | 23 October 1989 | ITF Sekisho, Japan | Hard | Han Eun-ju | 6–3, 3–6, 5–7 |
| Loss | 2. | 26 May 1997 | ITF Salzburg, Austria | Carpet | Sabine Lutter | 6–3, 1–6, 1–6 |
| Win | 1. | 24 October 1988 | ITF Ibaraki, Japan | Hard | Kimiko Date | Maya Kidowaki Paulette Moreno | 6–4, 4–6, 9–7 |
| Loss | 1. | 31 October 1988 | ITF Saga, Japan | Grass | Kimiko Date | Maya Kidowaki Naoko Sato | 4–6, 5–7 |
| Win | 2. | 7 November 1988 | ITF Matsuyama, Japan | Hard | Kimiko Date | Yasuyo Kajita Maya Kidowaki | 7–5, 3–6, 7–5 |
| Loss | 2. | 14 November 1988 | ITF Kyoto, Japan | Hard | Kimiko Date | Kazuko Ito Yasuyo Kajita | 4–6, 5–7 |
| Win | 3. | 19 February 1990 | ITF Melbourne, Australia | Hard | Ayako Hirose | Danielle Jones Sharon McNamara | 6–3, 6–2 |
| Loss | 3. | 5 March 1990 | ITF Newcastle, Australia | Grass | Ayako Hirose | Kirrily Sharpe Angie Woolcock | 6–3, 5–7, 4–6 |
| Win | 4. | 28 September 1992 | ITF Ibaraki, Japan | Hard | Naoko Kijimuta | Lisa McShea Amy deLone | 6–3, 2–2 ret. |
| Win | 5. | 5 October 1992 | ITF Kuroshio, Japan | Hard | Naoko Kijimuta | Yuka Tanaka Mami Donoshiro | 6–2, 6–4 |
| Win | 6. | 19 October 1992 | ITF Kyoto, Japan | Hard | Naoko Kijimuta | Sandy Sureephong Masako Yanagi | 6–3, 6–3 |
| Loss | 4. | 28 June 1993 | ITF Columbia, United States | Hard | Naoko Kijimuta | Keiko Nagatomi Mika Todo | 5–7, 4–6 |
| Win | 7. | 5 July 1993 | ITF Indianapolis, United States | Hard | Naoko Kijimuta | Kate McDonald Stephanie Reece | 7–5, 6–3 |
| Loss | 5. | 27 March 1995 | ITF Jakarta, Indonesia | Hard | Park In-sook | Benjamas Sangaram Lisa Tang | 7–5, 5–7, 3–6 |
| Win | 8. | 16 October 1995 | ITF Kugayama, Japan | Hard | Shinobu Asagoe | Natalie Frawley Jenny Anne Fetch | 6–4, 7–6(3) |
| Loss | 6. | 6 May 1996 | ITF Seoul, South Korea | Clay | Yuka Tanaka | Catherine Barclay-Reitz Kerry-Anne Guse | 6–4, 0–6, 3–6 |
| Win | 9. | 17 March 1997 | ITF Noda, Japan | Hard | Keiko Nagatomi | Choi Young-ja Jeon Mi-ra | 6–2, 6–2 |
| Win | 10. | 14 September 1998 | ITF Ibaraki, Japan | Hard | Hsu Hsueh-li | Riei Kawamata Yoshiko Sasano | 6–4, 4–6, 7–5 |
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