Claire Liu
all rivalries →| Opponent | W | L | M | Last Played | H2H |
|---|---|---|---|---|---|
| Yulia Putintseva | 1 | 3 | 4 | Jul 14, 2026 | H2H |
| Coco Gauff | 0 | 3 | 3 | Jul 3, 2026 | H2H |
| Shelby Rogers | 0 | 3 | 3 | Apr 3, 2024 | H2H |
| Marta Kostyuk | 1 | 2 | 3 | Jan 16, 2024 | H2H |
| Iga Swiatek | 0 | 3 | 3 | Jul 28, 2023 | H2H |
H2H data updated: 2026-09-14 00:00 UTC
Claire Liu vs Yeonwoo Ku H2H: 1-0
Claire Liu holds a 1–0 lead over Yeonwoo Ku in their WTA head-to-head. Across 1 main-draw meeting, Claire Liu leads 1–0 on hard courts. Most recently, Claire Liu won the 2023 Korea Open first round 6-3 6-3.
Want to explore more matchups? Advanced rivalry search lets you browse current and historical rivalries, unbeaten records, or every matchup for a player.
H2H
1
–
0
1 main-draw meetings
H2H Match Log
| Player | Score | Player | Match Data | Date | Round | Tournament | Category | Surface |
|---|---|---|---|---|---|---|---|---|
| Claire Liu | 6-3 6-3 | Yeonwoo Ku | Match data | Oct 12, 2023* | R32 | Korea Open | WTA 250 | Hard |
Estimated match date where the exact historical date is unavailable. Arrows show an edition's recorded category and documented modern equivalent; unresolved editions keep their recorded category. Asterisked totals include editions mapped from documented historical predecessor categories. Mapping details.
Career Comparison
| Player | Current | Peak | Pts | Elo | W | L | Win % | GS | 1000 including documented historical predecessor categories | Finals | 500 including documented historical predecessor categories | 250 including documented historical predecessor categories | Titles |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Claire Liu | #111 | #52 | 1,024 | 1,760 | 44 | 64 | 40.7% | 0 | 0 | 0 | 0 | 0 | 0 |
| Yeonwoo Ku | #179 | #171 | 452 | 1,529 | 0 | 2 | 0.0% | 0 | 0 | 0 | 0 | 0 | 0 |
Career Progression by Age
Seasons are aligned by the age each player spent most of that calendar year. GS and Titles are cumulative career totals through that season.
| Age | Claire Liu | Yeonwoo Ku | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Yr | W-L | Win % | Rank | Elo | GS | Titles | Yr | W-L | Win % | Rank | Elo | GS | Titles | |
| 17 | 2017 | 0–2 | 0.0% | #266 | 1,447 | 0 | 0 | — | — | — | — | — | — | — |
| 18 | 2018 | 5–7 | 41.7% | #141 | 1,553 | 0 | 0 | — | — | — | — | — | — | — |
| 20 | 2020 | 0–1 | 0.0% | #218 | 1,502 | 0 | 0 | 2023 | 0–1 | 0.0% | — | 1,516 | 0 | 0 |
| 21 | 2021 | 3–5 | 37.5% | #94 | 1,593 | 0 | 0 | — | — | — | — | — | — | — |
| 22 | 2022 | 15–15 | 50.0% | #59 | 1,720 | 0 | 0 | 2025 | 0–1 | 0.0% | #192 | 1,487 | 0 | 0 |
| 23 | 2023 | 14–20 | 41.2% | #98 | 1,674 | 0 | 0 | — | — | — | — | — | — | — |
| 24 | 2024 | 1–5 | 16.7% | #269 | 1,666 | 0 | 0 | — | — | — | — | — | — | — |
| 25 | 2025 | 3–5 | 37.5% | #207 | 1,701 | 0 | 0 | — | — | — | — | — | — | — |
| 26 | 2026 | 3–4 | 42.9% | #111 | 1,752 | 0 | 0 | — | — | — | — | — | — | — |
Surface Results by Age
Seasons are aligned by the age each player spent most of that calendar year. Results cover completed main-draw matches. Bold green marks the higher win percentage when both players have at least 5 matches on that surface at the aligned age.
| Age | Claire Liu | Yeonwoo Ku | ||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Yr | Hard | Clay | Grass | Yr | Hard | Clay | Grass | |||||||||||||||||||
| W | L | M | Win % | W | L | M | Win % | W | L | M | Win % | W | L | M | Win % | W | L | M | Win % | W | L | M | Win % | |||
| 17 | 2017 | 0 | 2 | 2 | 0.0% | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| 18 | 2018 | 2 | 4 | 6 | 33.3% | 2 | 2 | 4 | 50.0% | 1 | 1 | 2 | 50.0% | — | — | — | — | — | — | — | — | — | — | — | — | — |
| 20 | 2020 | 0 | 1 | 1 | 0.0% | — | — | — | — | — | — | — | — | 2023 | 0 | 1 | 1 | 0.0% | — | — | — | — | — | — | — | — |
| 21 | 2021 | 1 | 3 | 4 | 25.0% | 1 | 1 | 2 | 50.0% | 1 | 1 | 2 | 50.0% | — | — | — | — | — | — | — | — | — | — | — | — | — |
| 22 | 2022 | 8 | 10 | 18 | 44.4% | 6 | 3 | 9 | 66.7% | 1 | 2 | 3 | 33.3% | 2025 | 0 | 1 | 1 | 0.0% | — | — | — | — | — | — | — | — |
| 23 | 2023 | 9 | 13 | 22 | 40.9% | 5 | 5 | 10 | 50.0% | 0 | 2 | 2 | 0.0% | — | — | — | — | — | — | — | — | — | — | — | — | — |
| 24 | 2024 | 1 | 4 | 5 | 20.0% | 0 | 1 | 1 | 0.0% | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| 25 | 2025 | 3 | 5 | 8 | 37.5% | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| 26 | 2026 | 0 | 1 | 1 | 0.0% | 1 | 2 | 3 | 33.3% | 2 | 1 | 3 | 66.7% | — | — | — | — | — | — | — | — | — | — | — | — | — |
| Career | — | 24 | 43 | 67 | 35.8% | 15 | 14 | 29 | 51.7% | 5 | 7 | 12 | 41.7% | — | 0 | 2 | 2 | 0.0% | — | — | — | — | — | — | — | — |
Performance Progression by Age
Seasons are aligned by the age each player spent most of that calendar year. Detailed serve and return statistics available for 106/108 of Claire Liu's and 2/2 of Yeonwoo Ku's main draw matches. Sample is shown as matches with detailed serve and return statistics / total main draw matches. Bold green marks the stronger value when both stat samples contain at least 5 matches; lower is better for DFs/M.
| Age | Claire Liu | Yeonwoo Ku | ||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Yr | Sample | Aces/M | DFs/M | 1st Sv% | 1st Pts% | 2nd Pts% | BP Saved% | BP Conv% | Svc Pts% | Ret Pts% | Yr | Sample | Aces/M | DFs/M | 1st Sv% | 1st Pts% | 2nd Pts% | BP Saved% | BP Conv% | Svc Pts% | Ret Pts% | |
| 17 | 2017 | 2/2 | 1.0 | 2.0 | 63.8% | 54.1% | 35.3% | 53.7% | 58.2% | 48.6% | 45.8% | — | —/— | — | — | — | — | — | — | — | — | — |
| 18 | 2018 | 12/12 | 1.1 | 5.1 | 65.7% | 56.3% | 40.7% | 47.9% | 45.2% | 50.4% | 43.2% | — | —/— | — | — | — | — | — | — | — | — | — |
| 20 | 2020 | 1/1 | 0.0 | 0.0 | 69.1% | 51.1% | 33.3% | 62.5% | 42.9% | 45.6% | 44.4% | 2023 | 1/1 | 0.0 | 5.0 | 68.4% | 59.0% | 55.6% | 66.7% | — | 57.9% | 30.2% |
| 21 | 2021 | 8/8 | 3.8 | 3.9 | 62.0% | 60.8% | 42.4% | 51.8% | 40.6% | 53.8% | 39.4% | — | —/— | — | — | — | — | — | — | — | — | — |
| 22 | 2022 | 29/30 | 2.9 | 2.5 | 64.4% | 62.5% | 42.5% | 45.7% | 43.8% | 55.6% | 42.9% | 2025 | 1/1 | 0.0 | 4.0 | 66.7% | 43.2% | 36.4% | 53.9% | 66.7% | 40.9% | 33.3% |
| 23 | 2023 | 34/34 | 2.4 | 2.8 | 63.8% | 61.2% | 44.1% | 47.1% | 48.9% | 55.3% | 41.1% | — | —/— | — | — | — | — | — | — | — | — | — |
| 24 | 2024 | 6/6 | 1.3 | 2.5 | 62.3% | 56.1% | 34.2% | 45.6% | 56.2% | 48.4% | 38.7% | — | —/— | — | — | — | — | — | — | — | — | — |
| 25 | 2025 | 7/8 | 6.6 | 3.9 | 70.0% | 60.8% | 40.2% | 61.2% | 37.5% | 54.8% | 40.0% | — | —/— | — | — | — | — | — | — | — | — | — |
| 26 | 2026 | 7/7 | 0.6 | 3.1 | 71.4% | 59.7% | 47.5% | 45.4% | 53.8% | 56.2% | 40.7% | — | —/— | — | — | — | — | — | — | — | — | — |
| Career | — | 106/108 | 2.5 | 3.1 | 64.9% | 60.3% | 42.3% | 48.2% | 46.6% | 54.1% | 41.6% | — | 2/2 | 0.0 | 4.5 | 67.5% | 51.1% | 46.0% | 60.3% | 33.3% | 49.4% | 31.8% |
Advanced Statistics Comparison by Age
Seasons are aligned by the age each player spent most of that calendar year. Metrics use eligible main-draw results; point statistics use matches with detailed data. Bold green marks the stronger value when both underlying samples are sufficient. Lower is better for Schedule because a negative value means a tougher schedule. Career Schedule is normalized per 100 matches.
| Age | Claire Liu | Yeonwoo Ku | ||||||||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Yr | Elo | P+ | Serve+ | Return+ | PD | TPW% | Hard Elo | Clay Elo | Grass Elo | Set Win % | Set Margin | Dec. Set | Tiebreak | Pressure+ | Schedule | Yr | Elo | P+ | Serve+ | Return+ | PD | TPW% | Hard Elo | Clay Elo | Grass Elo | Set Win % | Set Margin | Dec. Set | Tiebreak | Pressure+ | Schedule | |
| 17 | 2017 | 1447 | 94.6 | -3.66 | -1.51 | 0.890 | 47.1% | — | — | — | 20.0% | -1.00 | 0–1 | 0–3 (0%) | — | +0.37 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| 18 | 2018 | 1554 | 116.3 | -3.37 | +0.46 | 0.871 | 46.8% | -95 | +102 | — | 41.9% | -0.77 | 4–3 (57%) | 2–2 (50%) | 102.5 | +0.36 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| 19 | 2019 | 1549 | 100.5 | — | — | — | — | — | — | — | — | — | — | — | — | — | 2022 | 1496 | 99.4 | — | — | — | — | — | — | — | — | — | — | — | — | — |
| 20 | 2020 | 1502 | 97.4 | +1.47 | -4.29 | 0.817 | 45.0% | — | — | — | 0.0% | -3.00 | — | — | — | +0.07 | 2023 | 1516 | 101.8 | -1.57 | -2.27 | 0.717 | 44.5% | — | — | — | 0.0% | -3.00 | — | — | — | +0.01 |
| 21 | 2021 | 1593 | 112.6 | -2.02 | -0.91 | 0.852 | 46.6% | -88 | — | — | 38.1% | -0.90 | 3–2 (60%) | — | — | -0.21 | 2024 | 1514 | 98.1 | — | — | — | — | — | — | — | — | — | — | — | — | — |
| 22 | 2022 | 1721 | 133.0 | -0.65 | +0.08 | 0.967 | 49.4% | -64 | +103 | -123 | 47.7% | -0.17 | 4–3 (57%) | 2–5 (29%) | 101.6 | -0.48 | 2025 | 1488 | 94.0 | -1.85 | +0.96 | 0.564 | 38.1% | — | — | — | 0.0% | -4.50 | — | — | — | +0.03 |
| 23 | 2023 | 1674 | 129.9 | -0.20 | -1.03 | 0.921 | 48.2% | -12 | +82 | — | 41.9% | -0.72 | 3–7 (30%) | 5–4 (56%) | 96.7 | -0.49 | 2026 | 1497 | 104.6 | — | — | — | — | — | — | — | — | — | — | — | — | — |
| 24 | 2024 | 1666 | 124.1 | -1.61 | -1.39 | 0.750 | 43.8% | +33 | — | — | 27.3% | -1.82 | 0–1 | — | — | -1.11 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| 25 | 2025 | 1702 | 120.0 | -1.96 | -1.58 | 0.885 | 48.0% | +40 | — | — | 40.0% | -0.85 | 2–2 (50%) | 0–1 | — | +0.19 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| 26 | 2026 | 1752 | 124.7 | -0.17 | -1.66 | 0.927 | 49.2% | — | -67 | -46 | 44.4% | -0.33 | 2–2 (50%) | 2–1 (67%) | 101.3 | +0.07 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| Career | — | 1760 | 128.8 | -1.06 | -0.69 | 0.907 | 48.0% | -29 | +75 | -85 | 41.7% | -0.65 | 18–21 (46%) | 11–16 (41%) | 99.3 | -1.15 | — | 1529 | 100.1 | -1.71 | -0.66 | 0.628 | 41.3% | — | — | — | 0.0% | -3.75 | — | — | — | +2.00 |
Career Rivalries
Each player's five most-played main-draw opponents. The current matchup is highlighted when it appears in a player's top five.
Yeonwoo Ku
all rivalries →| Opponent | W | L | M | Last Played | H2H |
|---|---|---|---|---|---|
| Lois Boisson | 0 | 1 | 1 | Sep 15, 2025 | H2H |
| Claire Liu | 0 | 1 | 1 | Oct 12, 2023 | H2H |