Ku Yeon-woo
| Country (sports) | South Korea |
|---|---|
| Born | 15 March 2003 |
| Plays | Right-handed |
| Prize money | $125,398 |
| Singles | |
| Career record | 219–112 |
| Career titles | 7 ITF |
| Highest ranking | No. 187 (12 January 2026) |
| Current ranking | No. 197 (16 March 2026) |
| Grand Slam singles results | |
| Australian Open | Q1 (2026) |
| Doubles | |
| Career record | 77–51 |
| Career titles | 7 ITF |
| Highest ranking | No. 372 (6 October 2025) |
| Current ranking | No. 395 (12 January 2026) |
| Last updated on: 12 January 2026. | |
Ku Yeon-woo (born 15 March 2003) is a South Korean tennis player. She has a career-high singles ranking of world No. 195, achieved on 1 December 2025, and a best doubles ranking of No. 372, reached on 6 October 2025, by the WTA.[1] She is the current No. 1 Korean singles player.
Career
Ku made her WTA Tour main-draw singles debut at the 2023 Korea Open as a qualifier, losing in the first round to Claire Liu.[2]
She received a wildcard entry into the main-draw at the 2025 Korea Open, but again lost in the first round, this time to Loïs Boisson.[3]
ITF Circuit finals
Singles: 13 (7 titles, 6 runner-ups)
|
|
| Result | W–L | Date | Tournament | Tier | Surface | Opponent | Score |
|---|---|---|---|---|---|---|---|
| Win | 1–0 | Aug 2019 | ITF Yeongwol, South Korea | W15 | Hard | Watsachol Sawatdee | 3–6, 6–3, 6–2 |
| Win | 2–0 | Oct 2021 | ITF Sozopol, Bulgaria | W15 | Hard | Julia Terziyska | 6–4, 6–2 |
| Win | 3–0 | Nov 2021 | ITF Lousada, Portugal | W15 | Hard (i) | Živa Falkner | 6–0, 7–5 |
| Loss | 3–1 | Feb 2024 | ITF Gurugram, India | W35 | Hard | Justina Mikulskytė | 0–6, 1–6 |
| Loss | 3–2 | Mar 2024 | ITF Nagpur, India | W35 | Clay | Dalila Jakupović | 1–6, 2–6 |
| Loss | 3–3 | Mar 2025 | ITF Kashiwa, Japan | W15 | Hard | Ayano Shimizu | 3–6, 3–6 |
| Win | 4–3 | Jun 2025 | ITF Taipei, Taiwan | W35 | Hard | Rina Saigo | 6–1, 6–4 |
| Loss | 4–4 | Jul 2025 | ITF Monastir, Tunisia | W35 | Hard | Sakura Hosogi | 3–6, 3–6 |
| Win | 5–4 | Sep 2025 | ITF Nakhon Pathom, Thailand | W35 | Hard | Anchisa Chanta | 6–4, 2–0 ret. |
| Win | 6–4 | Oct 2025 | ITF Lagos, Portugal | W35 | Hard | Carolyn Ansari | 6–2, 4–6, 7–6(5) |
| Win | 7–4 | Oct 2025 | ITF Loulé, Portugal | W35 | Hard | Hibah Shaikh | 7–6(6), 6–3 |
| Loss | 7–5 | Nov 2025 | Takasaki Open, Japan | W100 | Hard | Himeno Sakatsume | 3–6, 6–1, 4–6 |
| Loss | 7–6 | Nov 2025 | Keio Challenger, Japan | W50 | Hard | Zhang Shuai | 3–6, 2–6 |
Doubles: 14 (7 titles, 7 runner-ups)
|
|
| Result | W–L | Date | Tournament | Tier | Surface | Partner | Opponents | Score |
|---|---|---|---|---|---|---|---|---|
| Loss | 0–1 | Mar 2021 | ITF Sharm El Sheikh, Egypt | W15 | Hard | Raphaëlle Lacasse | Alicia Barnett Lily Miyazaki |
4–6, 1–6 |
| Win | 1–1 | Aug 2021 | ITF Bad Waltersdorf, Austria | W15 | Clay | Priska Madelyn Nugroho | Giulia Crescenzi Arianna Zucchini |
6–4, 6–3 |
| Loss | 1–2 | Aug 2021 | ITF Aix-en-Provence, France | W15 | Clay | Maria Bondarenko | Julie Belgraver Léa Tholey |
1–6, 2–6 |
| Win | 2–2 | Sep 2021 | ITF Melilla, Spain | W15 | Clay | Caijsa Hennemann | Luisa Meyer auf der Heide Chantal Sauvant |
6–3, 6–0 |
| Win | 3–2 | Oct 2021 | ITF Seville, Spain | W25 | Clay | Caijsa Hennemann | Lina Gjorcheska Tena Lukas |
7–5, 6–1 |
| Loss | 3–3 | Oct 2022 | ITF Quinta da Lago, Portugal | W25 | Clay | Adrienn Nagy | Francisca Jorge Matilde Jorge |
4–6, 4–6 |
| Win | 4–3 | May 2023 | ITF Incheon, South Korea | W25 | Hard | Choi Ji-hee | Li Yu-yun Tang Qianhui |
6–1, 6–1 |
| Loss | 4–4 | Jul 2023 | Open Castilla y León, Spain | W25 | Hard | Diāna Marcinkēviča | Rasheeda McAdoo Alexandra Osborne |
4–6, 3–6 |
| Loss | 4–5 | Mar 2024 | ITF Nagpur, India | W35 | Clay | Justina Mikulskytė | Irina Bara Dalila Jakupović |
7–6(8), 6–7(5), [7–10] |
| Win | 5–5 | Mar 2025 | ITF Kashiwa, Japan | W15 | Hard | Naho Sato | Eri Shimizu Kisa Yoshioka |
6–2, 6–4 |
| Loss | 5–6 | Apr 2025 | ITF Osaka, Japan | W35 | Hard | Janice Tjen | Momoko Kobori Ayano Shimizu |
4–6, 5–7 |
| Loss | 5–7 | May 2025 | ITF Daegu, South Korea | W15 | Hard | Kim Da-bin | Back Da-yeon Lee Eun-hye |
1–6, 1–6 |
| Win | 6–7 | Jun 2025 | ITF Taipei, Taiwan | W35 | Hard | Eri Shimizu | Park So-hyun Ayano Shimizu |
6–4, 2–6, [10–5] |
| Win | 7–7 | Jul 2025 | ITF Monastir, Tunisia | W35 | Hard | Back Da-yeon | Sakura Hosogi Misaki Matsuda |
6–3, 6–3 |
References
- ^ "Yeon Woo Ku | Player Stats & More – WTA Official". Women's Tennis Association.
- ^ "Korea Open: Liu advances to second round". Tennis Majors. Retrieved 5 November 2024.
- ^ "Boisson earns first WTA hard-court win vs. wild card Ku in Seoul". Women's Tennis Association. Retrieved 3 November 2025.