H2H data updated: 2026-09-14 00:00 UTC
Anna Karolina Schmiedlova holds a 1–0 lead over Kayla Day in their WTA head-to-head. Across 1 main-draw meeting, Anna Karolina Schmiedlova leads 1–0 on clay. Most recently, Anna Karolina Schmiedlova won the 2023 Roland Garros third round 6-1 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.
| Player | Score | Player | Match Data | Date | Round | Tournament | Category | Surface |
|---|---|---|---|---|---|---|---|---|
| Anna Karolina Schmiedlova | 6-1 6-3 | Kayla Day | Match data | Jun 3, 2023* | R32 | Roland Garros | Grand Slam | Clay |
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.
| 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Anna Karolina Schmiedlova | #379 | #26 | 1,875 | 1,789 | 120 | 164 | 42.3% | 0 | 0 | 0 | 0 | 3 | 3 |
| Kayla Day | #117 | #84 | 847 | 1,637 | 9 | 29 | 23.7% | 0 | 0 | 0 | 0 | 0 | 0 |
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 | Anna Karolina Schmiedlova | 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 | 2013 | 3–7 | 30.0% | #83 | 1,513 | 0 | 0 | 2018 | 0–2 | 0.0% | #313 | 1,487 | 0 | 0 |
| 19 | 2014 | 5–17 | 22.7% | #73 | 1,451 | 0 | 0 | — | — | — | — | — | — | — |
| 20 | 2015 | 37–21 | 63.8% | #26 | 1,761 | 0 | 2 | — | — | — | — | — | — | — |
| 21 | 2016 | 5–24 | 17.2% | #227 | 1,499 | 0 | 2 | — | — | — | — | — | — | — |
| 22 | — | — | — | — | — | — | — | 2022 | 0–2 | 0.0% | #197 | 1,534 | 0 | 0 |
| 23 | 2018 | 12–14 | 46.2% | #78 | 1,548 | 0 | 3 | 2023 | 3–6 | 33.3% | #87 | 1,564 | 0 | 0 |
| 24 | 2019 | 7–12 | 36.8% | #134 | 1,627 | 0 | 3 | 2024 | 0–7 | 0.0% | #241 | 1,435 | 0 | 0 |
| 25 | 2020 | 4–5 | 44.4% | #135 | 1,677 | 0 | 3 | — | — | — | — | — | — | — |
| 26 | 2021 | 14–14 | 50.0% | #85 | 1,671 | 0 | 3 | 2026 | 2–5 | 28.6% | #117 | 1,604 | 0 | 0 |
| 27 | 2022 | 7–17 | 29.2% | #103 | 1,621 | 0 | 3 | — | — | — | — | — | — | — |
| 28 | 2023 | 11–14 | 44.0% | #72 | 1,649 | 0 | 3 | — | — | — | — | — | — | — |
| 29 | 2024 | 15–19 | 44.1% | #110 | 1,709 | 0 | 3 | — | — | — | — | — | — | — |
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 | Anna Karolina Schmiedlova | 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 | 2013 | 1 | 3 | 4 | 25.0% | 2 | 3 | 5 | 40.0% | 0 | 1 | 1 | 0.0% | 2018 | 0 | 2 | 2 | 0.0% | — | — | — | — | — | — | — | — |
| 19 | 2014 | 3 | 10 | 13 | 23.1% | 2 | 5 | 7 | 28.6% | 0 | 2 | 2 | 0.0% | — | — | — | — | — | — | — | — | — | — | — | — | — |
| 20 | 2015 | 21 | 12 | 33 | 63.6% | 15 | 6 | 21 | 71.4% | 1 | 3 | 4 | 25.0% | — | — | — | — | — | — | — | — | — | — | — | — | — |
| 21 | 2016 | 4 | 14 | 18 | 22.2% | 1 | 8 | 9 | 11.1% | 0 | 2 | 2 | 0.0% | — | — | — | — | — | — | — | — | — | — | — | — | — |
| 22 | — | — | — | — | — | — | — | — | — | — | — | — | — | 2022 | 0 | 2 | 2 | 0.0% | — | — | — | — | — | — | — | — |
| 23 | 2018 | 5 | 8 | 13 | 38.5% | 7 | 5 | 12 | 58.3% | 0 | 1 | 1 | 0.0% | 2023 | 1 | 4 | 5 | 20.0% | 2 | 2 | 4 | 50.0% | — | — | — | — |
| 24 | 2019 | 4 | 5 | 9 | 44.4% | 3 | 6 | 9 | 33.3% | 0 | 1 | 1 | 0.0% | 2024 | 0 | 3 | 3 | 0.0% | 0 | 3 | 3 | 0.0% | 0 | 1 | 1 | 0.0% |
| 25 | 2020 | 1 | 3 | 4 | 25.0% | 3 | 2 | 5 | 60.0% | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| 26 | 2021 | 9 | 8 | 17 | 52.9% | 5 | 6 | 11 | 45.5% | — | — | — | — | 2026 | 2 | 3 | 5 | 40.0% | 0 | 1 | 1 | 0.0% | 0 | 1 | 1 | 0.0% |
| 27 | 2022 | 3 | 7 | 10 | 30.0% | 3 | 9 | 12 | 25.0% | 1 | 1 | 2 | 50.0% | — | — | — | — | — | — | — | — | — | — | — | — | — |
| 28 | 2023 | 6 | 9 | 15 | 40.0% | 5 | 4 | 9 | 55.6% | 0 | 1 | 1 | 0.0% | — | — | — | — | — | — | — | — | — | — | — | — | — |
| 29 | 2024 | 6 | 10 | 16 | 37.5% | 9 | 8 | 17 | 52.9% | 0 | 1 | 1 | 0.0% | — | — | — | — | — | — | — | — | — | — | — | — | — |
| Career | — | 63 | 89 | 152 | 41.4% | 55 | 62 | 117 | 47.0% | 2 | 13 | 15 | 13.3% | — | 7 | 20 | 27 | 25.9% | 2 | 7 | 9 | 22.2% | 0 | 2 | 2 | 0.0% |
Seasons are aligned by the age each player spent most of that calendar year. Detailed serve and return statistics available for 253/285 of Anna Karolina Schmiedlova's and 38/39 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 | Anna Karolina Schmiedlova | 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 | 2013 | 6/10 | 1.3 | 3.5 | 66.6% | 55.4% | 39.6% | 38.9% | 37.7% | 49.9% | 36.8% | 2018 | 2/2 | 5.0 | 6.0 | 48.1% | 68.0% | 33.7% | 50.0% | 35.0% | 49.8% | 33.8% |
| 19 | 2014 | 19/22 | 0.8 | 4.5 | 64.5% | 56.2% | 37.6% | 46.0% | 42.1% | 49.6% | 41.4% | — | —/— | — | — | — | — | — | — | — | — | — |
| 20 | 2015 | 44/58 | 1.7 | 3.9 | 67.2% | 63.7% | 52.3% | 47.4% | 54.1% | 60.1% | 46.2% | — | —/— | — | — | — | — | — | — | — | — | — |
| 21 | 2016 | 25/29 | 1.4 | 5.8 | 61.8% | 55.1% | 35.3% | 45.2% | 38.9% | 47.6% | 41.4% | — | —/— | — | — | — | — | — | — | — | — | — |
| 22 | — | —/— | — | — | — | — | — | — | — | — | — | 2022 | 2/2 | 4.0 | 2.5 | 66.5% | 68.4% | 39.1% | 56.4% | 50.0% | 58.6% | 36.6% |
| 23 | 2018 | 26/26 | 1.0 | 3.8 | 61.5% | 57.8% | 44.5% | 49.5% | 47.5% | 52.4% | 47.5% | 2023 | 9/9 | 2.2 | 3.0 | 58.1% | 62.9% | 43.8% | 57.4% | 39.7% | 55.0% | 39.3% |
| 24 | 2019 | 19/19 | 1.6 | 4.6 | 63.0% | 55.3% | 40.1% | 49.9% | 48.5% | 49.6% | 44.9% | 2024 | 7/7 | 3.7 | 3.3 | 66.8% | 58.5% | 42.2% | 52.8% | 37.1% | 55.1% | 36.5% |
| 25 | 2020 | 9/9 | 1.2 | 5.1 | 66.1% | 54.7% | 39.2% | 48.3% | 40.7% | 49.6% | 47.1% | — | —/— | — | — | — | — | — | — | — | — | — |
| 26 | 2021 | 28/28 | 1.4 | 2.6 | 60.4% | 61.7% | 47.5% | 41.6% | 44.4% | 56.1% | 43.3% | 2026 | 7/8 | 4.0 | 3.4 | 65.3% | 59.9% | 47.4% | 52.6% | 46.8% | 55.8% | 40.7% |
| 27 | 2022 | 24/24 | 1.6 | 3.6 | 55.6% | 55.5% | 42.3% | 43.9% | 45.5% | 49.7% | 42.7% | — | —/— | — | — | — | — | — | — | — | — | — |
| 28 | 2023 | 25/25 | 2.3 | 3.9 | 57.7% | 63.0% | 43.5% | 50.1% | 47.0% | 54.8% | 44.7% | — | —/— | — | — | — | — | — | — | — | — | — |
| 29 | 2024 | 28/35 | 1.4 | 3.9 | 59.0% | 58.2% | 37.7% | 38.7% | 45.9% | 49.8% | 41.2% | — | —/— | — | — | — | — | — | — | — | — | — |
| Career | — | 253/285 | 1.5 | 4.0 | 61.8% | 58.8% | 43.0% | 45.6% | 46.2% | 52.8% | 43.8% | — | 38/39 | 3.2 | 3.8 | 59.1% | 62.2% | 42.6% | 53.5% | 41.1% | 54.4% | 38.4% |
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 | Anna Karolina Schmiedlova | 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 | 2013 | 1513 | 107.5 | -2.55 | -1.79 | 0.735 | 43.3% | +4 | +32 | — | 27.3% | -1.41 | 2–0 | 2–0 | — | -0.75 | 2018 | 1487 | 91.2 | -2.87 | -2.16 | 0.673 | 41.8% | — | — | — | 20.0% | -3.20 | 0–1 | — | — | +0.16 |
| 19 | 2014 | 1451 | 105.1 | -3.60 | -1.95 | 0.821 | 45.5% | +19 | +70 | — | 29.6% | -1.50 | 4–6 (40%) | 2–4 (33%) | 98.9 | -0.14 | 2019 | 1463 | 99.5 | — | — | — | — | — | — | — | — | — | — | — | — | — |
| 20 | 2015 | 1761 | 134.2 | +1.36 | +3.78 | 1.157 | 53.2% | -42 | -43 | -237 | 57.8% | +0.62 | 15–6 (71%) | 4–7 (36%) | 106.3 | +1.48 | 2020 | 1450 | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| 21 | 2016 | 1499 | 101.8 | -5.62 | -1.28 | 0.789 | 44.7% | +47 | +48 | — | 24.2% | -1.73 | 2–6 (25%) | 0–2 | — | -0.14 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| 22 | 2017 | 1469 | 95.5 | — | — | — | — | — | — | — | — | — | — | — | — | — | 2022 | 1535 | 99.5 | -0.90 | -1.76 | 0.884 | 47.0% | — | — | — | 0.0% | -2.00 | — | 0–1 | — | +0.44 |
| 23 | 2018 | 1548 | 112.3 | -2.82 | +2.01 | 0.997 | 50.0% | -48 | +99 | — | 46.6% | -0.47 | 3–7 (30%) | 2–3 (40%) | 97.9 | +1.08 | 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 | 2019 | 1628 | 110.4 | -4.82 | +1.29 | 0.890 | 47.2% | -94 | +45 | — | 40.9% | -0.89 | 2–4 (33%) | 2–5 (29%) | 95.9 | -0.11 | 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 | 2020 | 1678 | 118.9 | -2.76 | +0.91 | 0.934 | 48.3% | -120 | +75 | — | 45.5% | -0.54 | 2–2 (50%) | 1–0 | — | -0.49 | 2025 | 1474 | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| 26 | 2021 | 1672 | 118.8 | -0.62 | -0.75 | 0.988 | 49.9% | -64 | +96 | — | 50.0% | -0.08 | 5–5 (50%) | 3–1 (75%) | 101.9 | +0.76 | 2026 | 1604 | 129.8 | -0.29 | -0.02 | 0.921 | 48.5% | -18 | — | — | 35.3% | -0.94 | 1–2 (33%) | 1–1 | — | -0.59 |
| 27 | 2022 | 1622 | 117.7 | -4.76 | -1.06 | 0.848 | 46.3% | -19 | +88 | — | 33.3% | -1.30 | 2–4 (33%) | 3–2 (60%) | 98.4 | -0.42 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| 28 | 2023 | 1649 | 122.9 | -1.95 | +0.20 | 0.988 | 49.9% | -38 | +93 | — | 46.6% | -0.07 | 3–5 (38%) | 3–2 (60%) | 97.3 | +1.24 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| 29 | 2024 | 1710 | 128.0 | -5.04 | -1.14 | 0.820 | 45.7% | -67 | +116 | — | 40.3% | -0.99 | 8–5 (62%) | 4–2 (67%) | 105.8 | -1.49 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| 30 | 2025 | 1633 | 99.2 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| Career | — | 1790 | 122.4 | -2.67 | +0.39 | 0.928 | 48.4% | -34 | +60 | -237 | 42.7% | -0.57 | 48–50 (49%) | 26–28 (48%) | 101.6 | +0.36 | — | 1637 | 116.0 | -1.09 | -1.64 | 0.842 | 46.7% | -9 | +30 | — | 29.9% | -1.39 | 3–10 (23%) | 2–6 (25%) | 91.1 | +2.87 |
Each player's five most-played main-draw opponents. The current matchup is highlighted when it appears in a player's top five.
| Opponent | W | L | M | Last Played | H2H |
|---|---|---|---|---|---|
| Aliaksandra Sasnovich | 1 | 7 | 8 | Jul 20, 2024 | H2H |
| Irina-Camelia Begu | 4 | 2 | 6 | Jul 15, 2021 | H2H |
| Alison Van Uytvanck | 3 | 3 | 6 | Jan 10, 2019 | H2H |
| Jasmine Paolini | 2 | 3 | 5 | Aug 1, 2024 | H2H |
| Venus Williams | 4 | 1 | 5 | May 20, 2021 | H2H |
| 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 |