Ann Li
all rivalries →| Opponent | W | L | M | Last Played | H2H |
|---|---|---|---|---|---|
| Camila Osorio | 4 | 2 | 6 | Aug 24, 2026 | H2H |
| Maria Timofeeva | 4 | 0 | 4 | Aug 26, 2026 | H2H |
| Shuai Zhang | 4 | 0 | 4 | Aug 16, 2026 | H2H |
| Ekaterina Alexandrova | 1 | 3 | 4 | Jun 23, 2026 | H2H |
| Coco Gauff | 0 | 3 | 3 | Aug 18, 2026 | H2H |
H2H data updated: 2026-09-13 00:00 UTC
Ann Li vs Kayla Day
Compare the head-to-head record, career totals, season-by-season performance, and match log for Ann Li vs Kayla Day.
Want to explore more matchups? Advanced rivalry search lets you browse current and historical rivalries, unbeaten records, or every matchup for a player.
H2H
0
–
0
0 main-draw meetings
H2H Match Log
| Player | Score | Player | Match Data | Date | Round | Tournament | Category | Surface |
|---|---|---|---|---|---|---|---|---|
| Ann Li | 6-3 6-0 | Kayla Day | Match data | Feb 25, 2024 | Q2 | San Diego | WTA 500 | Hard |
| Kayla Day | 6-2 6-4 | Ann Li | Match data | Apr 2, 2023 | Q2 | Charleston Open | WTA 500 | Clay |
2 qualifying meetings shown in the table; qualifying is excluded from the H2H score. 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Ann Li | #28 | #28 | 1,683 | 1,844 | 95 | 85 | 52.8% | 0 | 0 | 0 | 0 | 2 | 2 |
| Kayla Day | #117 | #84 | 847 | 1,637 | 9 | 29 | 23.7% | 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 | Ann Li | Kayla Day | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Yr | W-L | Win % | Rank | Elo | GS | Titles | Yr | W-L | Win % | Rank | Elo | GS | Titles | |
| 16 | — | — | — | — | — | — | — | 2016 | 1–2 | 33.3% | #198 | 1,540 | 0 | 0 |
| 17 | — | — | — | — | — | — | — | 2017 | 3–5 | 37.5% | #150 | 1,524 | 0 | 0 |
| 18 | — | — | — | — | — | — | — | 2018 | 0–2 | 0.0% | #313 | 1,487 | 0 | 0 |
| 20 | 2020 | 3–4 | 42.9% | #98 | 1,613 | 0 | 0 | — | — | — | — | — | — | — |
| 21 | 2021 | 19–10 | 65.5% | #47 | 1,755 | 0 | 1 | — | — | — | — | — | — | — |
| 22 | 2022 | 11–16 | 40.7% | #129 | 1,666 | 0 | 1 | 2022 | 0–2 | 0.0% | #197 | 1,534 | 0 | 0 |
| 23 | 2023 | 1–4 | 20.0% | #169 | 1,668 | 0 | 1 | 2023 | 3–6 | 33.3% | #87 | 1,564 | 0 | 0 |
| 24 | 2024 | 7–5 | 58.3% | #96 | 1,706 | 0 | 1 | 2024 | 0–7 | 0.0% | #241 | 1,435 | 0 | 0 |
| 25 | 2025 | 30–23 | 56.6% | #38 | 1,816 | 0 | 2 | — | — | — | — | — | — | — |
| 26 | 2026 | 24–23 | 51.1% | #28 | 1,792 | 0 | 2 | 2026 | 2–5 | 28.6% | #117 | 1,604 | 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 | Ann Li | Kayla Day | ||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 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 % | |||
| 16 | — | — | — | — | — | — | — | — | — | — | — | — | — | 2016 | 1 | 2 | 3 | 33.3% | — | — | — | — | — | — | — | — |
| 17 | — | — | — | — | — | — | — | — | — | — | — | — | — | 2017 | 3 | 4 | 7 | 42.9% | 0 | 1 | 1 | 0.0% | — | — | — | — |
| 18 | — | — | — | — | — | — | — | — | — | — | — | — | — | 2018 | 0 | 2 | 2 | 0.0% | — | — | — | — | — | — | — | — |
| 20 | 2020 | 3 | 4 | 7 | 42.9% | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| 21 | 2021 | 17 | 7 | 24 | 70.8% | 1 | 1 | 2 | 50.0% | 1 | 2 | 3 | 33.3% | — | — | — | — | — | — | — | — | — | — | — | — | — |
| 22 | 2022 | 8 | 11 | 19 | 42.1% | 0 | 1 | 1 | 0.0% | 3 | 4 | 7 | 42.9% | 2022 | 0 | 2 | 2 | 0.0% | — | — | — | — | — | — | — | — |
| 23 | 2023 | 1 | 4 | 5 | 20.0% | — | — | — | — | — | — | — | — | 2023 | 1 | 4 | 5 | 20.0% | 2 | 2 | 4 | 50.0% | — | — | — | — |
| 24 | 2024 | 5 | 4 | 9 | 55.6% | 2 | 1 | 3 | 66.7% | — | — | — | — | 2024 | 0 | 3 | 3 | 0.0% | 0 | 3 | 3 | 0.0% | 0 | 1 | 1 | 0.0% |
| 25 | 2025 | 21 | 15 | 36 | 58.3% | 7 | 6 | 13 | 53.8% | 2 | 2 | 4 | 50.0% | — | — | — | — | — | — | — | — | — | — | — | — | — |
| 26 | 2026 | 13 | 14 | 27 | 48.1% | 9 | 6 | 15 | 60.0% | 2 | 3 | 5 | 40.0% | 2026 | 2 | 3 | 5 | 40.0% | 0 | 1 | 1 | 0.0% | 0 | 1 | 1 | 0.0% |
| Career | — | 68 | 59 | 127 | 53.5% | 19 | 15 | 34 | 55.9% | 8 | 11 | 19 | 42.1% | — | 7 | 20 | 27 | 25.9% | 2 | 7 | 9 | 22.2% | 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 165/181 of Ann Li's and 38/38 of Kayla Day'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 | Ann Li | Kayla Day | ||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 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% | |
| 16 | — | —/— | — | — | — | — | — | — | — | — | — | 2016 | 3/3 | 1.0 | 3.7 | 59.0% | 55.2% | 30.3% | 50.6% | 66.7% | 44.4% | 38.1% |
| 17 | — | —/— | — | — | — | — | — | — | — | — | — | 2017 | 8/8 | 3.4 | 5.5 | 48.8% | 66.2% | 45.1% | 51.9% | 31.0% | 55.7% | 38.9% |
| 18 | — | —/— | — | — | — | — | — | — | — | — | — | 2018 | 2/2 | 5.0 | 6.0 | 48.1% | 68.0% | 33.7% | 50.0% | 35.0% | 49.8% | 33.8% |
| 20 | 2020 | 7/7 | 1.6 | 1.4 | 65.4% | 60.3% | 45.8% | 47.0% | 36.5% | 55.3% | 40.2% | — | —/— | — | — | — | — | — | — | — | — | — |
| 21 | 2021 | 29/29 | 2.0 | 2.8 | 60.3% | 63.9% | 50.2% | 57.1% | 48.1% | 58.7% | 47.0% | — | —/— | — | — | — | — | — | — | — | — | — |
| 22 | 2022 | 25/27 | 1.8 | 2.7 | 60.9% | 61.1% | 44.6% | 53.2% | 42.5% | 54.5% | 40.9% | 2022 | 2/2 | 4.0 | 2.5 | 66.5% | 68.4% | 39.1% | 56.4% | 50.0% | 58.6% | 36.6% |
| 23 | 2023 | 5/5 | 2.4 | 2.2 | 54.4% | 63.4% | 45.2% | 51.9% | 43.3% | 54.6% | 37.0% | 2023 | 9/9 | 2.2 | 3.0 | 58.1% | 62.9% | 43.8% | 57.4% | 39.7% | 55.0% | 39.3% |
| 24 | 2024 | 12/12 | 1.7 | 2.3 | 66.0% | 65.9% | 44.5% | 51.4% | 45.0% | 58.5% | 47.5% | 2024 | 7/7 | 3.7 | 3.3 | 66.8% | 58.5% | 42.2% | 52.8% | 37.1% | 55.1% | 36.5% |
| 25 | 2025 | 42/54 | 4.5 | 2.4 | 58.4% | 66.4% | 48.0% | 50.5% | 45.8% | 58.6% | 44.4% | — | —/— | — | — | — | — | — | — | — | — | — |
| 26 | 2026 | 45/47 | 4.8 | 2.8 | 58.5% | 67.8% | 45.0% | 57.2% | 47.2% | 58.4% | 42.0% | 2026 | 7/7 | 4.0 | 3.4 | 65.3% | 59.9% | 47.4% | 52.6% | 46.8% | 55.8% | 40.7% |
| Career | — | 165/181 | 3.3 | 2.6 | 59.9% | 65.2% | 46.6% | 53.8% | 45.6% | 57.7% | 43.5% | — | 38/38 | 3.2 | 3.8 | 59.1% | 62.2% | 42.6% | 53.5% | 41.1% | 54.4% | 38.4% |
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 | Ann Li | Kayla Day | ||||||||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 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 | |
| 16 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 2016 | 1540 | 107.8 | -2.89 | +0.53 | 0.685 | 42.0% | +14 | — | — | 0.0% | -4.75 | — | — | — | -0.17 |
| 17 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 2017 | 1524 | 111.0 | 0.00 | -2.37 | 0.877 | 47.2% | +13 | — | — | 45.0% | -0.85 | 1–3 (25%) | — | — | -0.14 |
| 18 | 2018 | 1511 | 99.7 | — | — | — | — | — | — | — | — | — | — | — | — | — | 2018 | 1487 | 91.2 | -2.87 | -2.16 | 0.673 | 41.8% | — | — | — | 20.0% | -3.20 | 0–1 | — | — | +0.16 |
| 19 | 2019 | 1527 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 2019 | 1463 | 99.5 | — | — | — | — | — | — | — | — | — | — | — | — | — |
| 20 | 2020 | 1613 | 127.7 | -1.21 | -0.60 | 0.898 | 47.9% | +17 | — | — | 40.0% | -0.60 | 1–0 | 2–0 | — | +0.13 | 2020 | 1450 | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| 21 | 2021 | 1755 | 141.4 | +1.81 | +2.79 | 1.138 | 52.9% | +27 | — | -163 | 62.5% | +0.88 | 4–4 (50%) | 4–2 (67%) | 102.3 | +0.04 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| 22 | 2022 | 1667 | 126.3 | -1.81 | -0.68 | 0.898 | 48.0% | +42 | — | -81 | 42.6% | -0.41 | 5–4 (56%) | 2–6 (25%) | 97.9 | -1.14 | 2022 | 1535 | 99.5 | -0.90 | -1.76 | 0.884 | 47.0% | — | — | — | 0.0% | -2.00 | — | 0–1 | — | +0.44 |
| 23 | 2023 | 1669 | 123.4 | -0.74 | -1.07 | 0.814 | 46.1% | +18 | — | — | 25.0% | -1.50 | 1–1 | 1–0 | — | -0.31 | 2023 | 1565 | 118.9 | -0.78 | -1.35 | 0.874 | 47.7% | -48 | +5 | — | 31.6% | -0.84 | 1–0 | 0–1 | — | +0.61 |
| 24 | 2024 | 1706 | 123.8 | +0.97 | +1.36 | 1.145 | 52.8% | -63 | +90 | — | 53.6% | +0.72 | 3–1 (75%) | 1–1 | — | +0.29 | 2024 | 1436 | 102.7 | -2.31 | -3.54 | 0.812 | 46.2% | -2 | +63 | — | 22.2% | -1.61 | 0–4 (0%) | 1–3 (25%) | 92.8 | +0.78 |
| 25 | 2025 | 1817 | 139.2 | +1.60 | +0.86 | 1.071 | 51.3% | -21 | -53 | -232 | 55.6% | +0.32 | 9–9 (50%) | 9–7 (56%) | 102.2 | -1.29 | 2025 | 1474 | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| 26 | 2026 | 1792 | 142.7 | +1.18 | -0.52 | 1.008 | 50.2% | -16 | +23 | -173 | 49.1% | +0.06 | 12–10 (55%) | 7–8 (47%) | 102.5 | +1.69 | 2026 | 1604 | 129.8 | -0.05 | +0.23 | 0.921 | 48.5% | -18 | — | — | 35.3% | -0.94 | 1–2 (33%) | 1–1 | — | -0.59 |
| Career | — | 1845 | 141.5 | +0.77 | +0.51 | 1.027 | 50.6% | -1 | -2 | -150 | 51.4% | +0.17 | 35–29 (55%) | 26–24 (52%) | 106.2 | -0.33 | — | 1637 | 116.0 | -1.05 | -1.59 | 0.842 | 46.7% | -9 | +30 | — | 29.9% | -1.39 | 3–10 (23%) | 2–6 (25%) | 91.1 | +2.87 |
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.
Kayla Day
all rivalries →| Opponent | W | L | M | Last Played | H2H |
|---|---|---|---|---|---|
| Madison Keys | 1 | 2 | 3 | Jun 30, 2026 | H2H |
| Caroline Dolehide | 0 | 2 | 2 | Apr 3, 2024 | H2H |
| Marie Bouzkova | 0 | 2 | 2 | Oct 12, 2023 | H2H |
| Garbiñe Muguruza | 0 | 2 | 2 | Aug 4, 2017 | H2H |
| Shuai Zhang | 0 | 1 | 1 | Aug 15, 2026 | H2H |