Player data updated: 2026-10-17 16:37 UTC
Yeonwoo Ku
Instagram profile (opens in new tab)Yeonwoo Ku represents Korea (South) on the WTA Tour and is ranked No. 177, having reached a career high of No. 171. She most recently lost to Elena-Gabriela Ruse in the Korea Open round of 16 on September 24, 2026.
Singles ranking
177
Career singles high
171 (Jul 27, 2026)
Elo peak
1529 (15th percentile)
Singles record
1–3 (25.0%)
Singles titles
0
Prize money
$292,050
YTD W-L
1–1
Records cover recorded main-draw singles results in TennisDB's WTA event archive, including credited walkovers; qualifying is shown separately below.
WTA Matches full match log →
| Opponent | Score | Result | H2H | Match Data | Date | Round | Tournament | Category | Surface |
|---|---|---|---|---|---|---|---|---|---|
| Elena-Gabriela Ruse | 6-2 6-7(1) 1-6 | L | H2H | Match data | Sep 24, 2026 | R16 | Korea Open | WTA 250 | Hard |
| Alevtina Ibragimova | 6-3 6-2 | W | H2H | Match data | Sep 22, 2026 | R32 | Korea Open | WTA 250 | Hard |
| Storm Hunter | 6-4 6-7(6) 0-6 | L | H2H | Match data | Aug 26, 2026 | Q2 | US Open | Grand Slam | Hard |
| Astra Sharma | 6-4 6-3 | W | H2H | Match data | Aug 25, 2026 | Q1 | US Open | Grand Slam | Hard |
| Teodora Kostovic | 1-6 4-6 | L | H2H | Match data | Jun 23, 2026 | Q1 | Wimbledon | Grand Slam | Grass |
Qualifying matches are shown here but excluded from main-draw summaries and leaderboards.
Rivals all rivalries →
| Opponent | W | L | M | Last Played | H2H |
|---|---|---|---|---|---|
| Elena-Gabriela Ruse | 0 | 1 | 1 | Sep 24, 2026 | H2H |
| Alevtina Ibragimova | 1 | 0 | 1 | Sep 22, 2026 | H2H |
| Lois Boisson | 0 | 1 | 1 | Sep 15, 2025 | H2H |
| Claire Liu | 0 | 1 | 1 | Oct 12, 2023 | H2H |
Career Results
Career Results by Surface
| Season | Age | Type | Hard | Clay | Grass | Total | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| W | L | M | Win % | W | L | M | Win % | W | L | M | Win % | W | L | M | Win % | |||
| 2022 | 19 | Qualifying | 1 | 1 | 2 | 50.0% | — | — | — | — | — | — | — | — | 1 | 1 | 2 | 50.0% |
| 2023 | 20 | Qualifying | 2 | 0 | 2 | 100.0% | — | — | — | — | — | — | — | — | 2 | 0 | 2 | 100.0% |
| 2023 | 20 | WTA | 0 | 1 | 1 | 0.0% | — | — | — | — | — | — | — | — | 0 | 1 | 1 | 0.0% |
| 2024 | 21 | Qualifying | 1 | 1 | 2 | 50.0% | — | — | — | — | — | — | — | — | 1 | 1 | 2 | 50.0% |
| 2025 | 22 | WTA | 0 | 1 | 1 | 0.0% | — | — | — | — | — | — | — | — | 0 | 1 | 1 | 0.0% |
| 2026 | 23 | Qualifying | 2 | 3 | 5 | 40.0% | 0 | 1 | 1 | 0.0% | 0 | 1 | 1 | 0.0% | 2 | 5 | 7 | 28.6% |
| 2026 | 23 | WTA | 1 | 1 | 2 | 50.0% | — | — | — | — | — | — | — | — | 1 | 1 | 2 | 50.0% |
| Career | — | — | 1 | 3 | 4 | 25.0% | — | — | — | — | — | — | — | — | 1 | 3 | 4 | 25.0% |
Career Results by Opponent Rank
Performance Stats
| Season | Age | Sample | Aces/M | DFs/M | 1st Sv% | 1st Sv Pts% | 2nd Sv Pts% | BP Saved% | BP Conv% | Svc Pts% | Ret Pts% |
|---|---|---|---|---|---|---|---|---|---|---|---|
| 2023 | 20 | 1/1 | 0.0 | 5.0 | 68.4% | 59.0% | 55.6% | 66.7% | — | 57.9% | 30.2% |
| 2025 | 22 | 1/1 | 0.0 | 4.0 | 66.7% | 43.2% | 36.4% | 53.9% | 66.7% | 40.9% | 33.3% |
| 2026 | 23 | 2/2 | 2.5 | 5.5 | 60.7% | 65.4% | 42.7% | 61.9% | 56.3% | 56.6% | 49.0% |
| Career | 4/4 | 1.3 | 5.0 | 64.1% | 58.2% | 44.3% | 61.1% | 44.8% | 53.0% | 40.4% |
Advanced Stats
| Season | Age | Elo | P+ | Serve+ | Return+ | PD | TPW% | Hard Elo | Clay Elo | Grass Elo | Set Win % | Set Margin | Dec. Set | Tiebreak | Pressure+ | Schedule |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2022 | 19 | 1496 | 99.4 | — | — | — | — | — | — | — | — | — | — | — | — | — |
| 2023 | 20 | 1516 | 101.8 | -1.57 | -2.27 | 0.717 | 44.5% | — | — | — | 0.0% | -3.00 | — | — | — | +0.01 |
| 2024 | 21 | 1514 | 98.1 | — | — | — | — | — | — | — | — | — | — | — | — | — |
| 2025 | 22 | 1488 | 94.0 | -1.85 | +0.96 | 0.564 | 38.1% | — | — | — | 0.0% | -4.50 | — | — | — | +0.03 |
| 2026 | 23 | 1515 | 109.3 | +0.43 | -0.53 | 1.128 | 52.5% | — | — | — | 60.0% | +1.00 | 0–1 | 0–1 | — | -0.08 |
| Career | 1529 | 102.8 | -0.64 | -0.59 | 0.859 | 46.9% | — | — | — | 33.3% | -1.11 | 0–1 | 0–1 | — | -1.00 |
Tournament Results by Category
Grand Slams
| Season | Age | AO | RG | W | USO | W-L Win % |
|---|---|---|---|---|---|---|
| 2026 | 23 | Q1 | Q1 | Q1 | Q2 | 1–4 (20%) |
| W-L | 0–1 (0%) | 0–1 (0%) | 0–1 (0%) | 1–1 (50%) |
1–4 (20%) |
WTA 500
| Season | Age | KOR | W-L Win % |
|---|---|---|---|
| 2024 | 21 | Q2 | 1–1 (50%) |
| 2025 | 22 | R32 | 0–1 (0%) |
| W-L | 1–2 (33%) |
1–2 (33%) |
WTA 250
| Season | Age | ASB | KOR | W-L Win % |
|---|---|---|---|---|
| 2022 | 19 | — | Q2 | 1–1 (50%) |
| 2023 | 20 | — | R32 | 2–1 (67%) |
| 2026 | 23 | Q2 | R16 | 2–2 (50%) |
| W-L | 1–1 (50%) | 4–3 (57%) |
5–4 (56%) |
Results show the best round reached per tournament and season.
WTA Ranking History full ranking history →
Current rank
177
Career high
171
Career-high date
Jul 27, 2026
First Top 100
—
First Top 50
—
First Top 20
—
First Top 10
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Ranking History Matrix
Similar Players
Other WTA players with comparable peak level, era, career record, and career scale.
| Player | Country | Peak ranking | Peak Elo | M | W | L | Win % | Prize money | Titles | GS | W1000 | Years | Rivalries | Match log |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Carson Branstine (active player) | CAN | #172 | 1,633 | 4 | 1 | 3 | 25.0% | $398,079 | 0 | 0 | 0 | 2025–2025 | Rivalries | Match log |
| Akasha Urhobo (active player) | USA | #172 | 1,553 | 4 | 1 | 3 | 25.0% | $365,188 | 0 | 0 | 0 | 2024–2026 | Rivalries | Match log |
| Lina Gjorcheska (active player) | MKD | #181 | 1,509 | 4 | 1 | 3 | 25.0% | $673,048 | 0 | 0 | 0 | 2017–2026 | Rivalries | Match log |
| Kayla Cross (active player) | CAN | #157 | 1,500 | 4 | 1 | 3 | 25.0% | $417,835 | 0 | 0 | 0 | 2022–2026 | Rivalries | Match log |
| Elena Pridankina (active player) | RUS | #168 | 1,670 | 10 | 3 | 7 | 30.0% | $728,897 | 0 | 0 | 0 | 2024–2026 | Rivalries | Match log |
| Miriam Bulgaru (active player) | ROU | #168 | 1,603 | 10 | 2 | 8 | 20.0% | $566,390 | 0 | 0 | 0 | 2018–2026 | Rivalries | Match log |
| Alevtina Ibragimova (active player) | RUS | #166 | 1,634 | 3 | 1 | 2 | 33.3% | $186,864 | 0 | 0 | 0 | 2026–2026 | Rivalries | Match log |
| Ye-Xin Ma (active player) | CHN | #161 | 1,590 | 10 | 3 | 7 | 30.0% | $536,027 | 0 | 0 | 0 | 2023–2026 | Rivalries | Match log |
| Guiomar Maristany Zuleta De Reales (active player) | ESP | #145 | 1,679 | 4 | 1 | 3 | 25.0% | $588,820 | 0 | 0 | 0 | 2025–2026 | Rivalries | Match log |
| Kyoka Okamura (active player) | JPN | #178 | 1,646 | 6 | 1 | 5 | 16.7% | $514,896 | 0 | 0 | 0 | 2022–2026 | Rivalries | Match log |
| Xinxin Yao (active player) | CHN | #205 | 1,515 | 4 | 1 | 3 | 25.0% | $204,336 | 0 | 0 | 0 | 2024–2026 | Rivalries | Match log |
| Lucie Havlickova (active player) | CZE | #182 | 1,595 | 10 | 3 | 7 | 30.0% | $406,744 | 0 | 0 | 0 | 2021–2026 | Rivalries | Match log |
Frequently Asked Questions
- How old is Yeonwoo Ku?
- Yeonwoo Ku is 23 years old, born on March 15, 2003.
- Which country does Yeonwoo Ku represent?
- Yeonwoo Ku represents Korea (South) in TennisDB's WTA records.
- Is Yeonwoo Ku left-handed or right-handed?
- Yeonwoo Ku plays n/a.
- How many Grand Slam singles titles has Yeonwoo Ku won?
- Yeonwoo Ku has not won a Grand Slam singles title.
- How many WTA 1000 titles has Yeonwoo Ku won?
- TennisDB does not group any of Yeonwoo Ku's titles under the modern WTA 1000 category.
- What is Yeonwoo Ku's highest WTA ranking?
- Yeonwoo Ku's career-high WTA singles ranking is world No. 171, first achieved on July 27, 2026.
- What is Yeonwoo Ku's career win-loss record?
- Yeonwoo Ku has a career WTA singles record of 1 wins and 3 losses (25.0%).
- How much career prize money has Yeonwoo Ku earned?
- Yeonwoo Ku has earned at least $292,050 in career prize money from professional tennis.
- Which seasons of Yeonwoo Ku's career appear in TennisDB?
- Yeonwoo Ku appears in TennisDB's WTA main-tour match records from 2023 through 2026.
- Who has Yeonwoo Ku faced most often?
- Yeonwoo Ku's most frequent opponent is Elena-Gabriela Ruse, with a head-to-head record of 0–1 across 1 meeting.