H2H data updated: 2026-11-07 00:00 UTC
Liudmila Samsonova holds a 1–0 lead over Kayla Day in their WTA head-to-head. Across 1 main-draw meeting, Liudmila Samsonova leads 1–0 on hard courts. Most recently, Liudmila Samsonova won the 2026 Guadalajara Open second round 7-6(4) 2-6 7-6(5).
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 |
|---|---|---|---|---|---|---|---|---|
| Liudmila Samsonova | 7-6(4) 2-6 7-6(5) | Kayla Day | Match data | Sep 17, 2026 | R16 | Guadalajara Open | WTA 500 | Hard |
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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Liudmila Samsonova | #40 | #12 | 2,950 | 1,969 | 170 | 142 | 54.5% | 0 | 0 | 0 | 2 | 3 | 5 |
| Kayla Day | #121 | #84 | 847 | 1,638 | 11 | 31 | 26.2% | 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 | Liudmila Samsonova | 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 | 2019 | 4–6 | 40.0% | #129 | 1,554 | 0 | 0 | — | — | — | — | — | — | — |
| 21 | 2020 | 2–6 | 25.0% | #127 | 1,621 | 0 | 0 | — | — | — | — | — | — | — |
| 22 | 2021 | 22–17 | 56.4% | #38 | 1,800 | 0 | 1 | 2022 | 0–2 | 0.0% | #197 | 1,534 | 0 | 0 |
| 23 | 2022 | 29–16 | 64.4% | #20 | 1,915 | 0 | 4 | 2023 | 3–6 | 33.3% | #87 | 1,564 | 0 | 0 |
| 24 | 2023 | 35–24 | 59.3% | #16 | 1,933 | 0 | 4 | 2024 | 0–7 | 0.0% | #241 | 1,435 | 0 | 0 |
| 25 | 2024 | 27–23 | 54.0% | #27 | 1,853 | 0 | 5 | — | — | — | — | — | — | — |
| 26 | 2025 | 30–23 | 56.6% | #17 | 1,854 | 0 | 5 | 2026 | 4–7 | 36.4% | #121 | 1,602 | 0 | 0 |
| 27 | 2026 | 21–27 | 43.8% | #40 | 1,768 | 0 | 5 | — | — | — | — | — | — | — |
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 | Liudmila Samsonova | 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 | 2019 | 0 | 2 | 2 | 0.0% | 4 | 3 | 7 | 57.1% | 0 | 1 | 1 | 0.0% | — | — | — | — | — | — | — | — | — | — | — | — | — |
| 21 | 2020 | 1 | 4 | 5 | 20.0% | 1 | 2 | 3 | 33.3% | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| 22 | 2021 | 12 | 12 | 24 | 50.0% | 2 | 4 | 6 | 33.3% | 8 | 1 | 9 | 88.9% | 2022 | 0 | 2 | 2 | 0.0% | — | — | — | — | — | — | — | — |
| 23 | 2022 | 25 | 9 | 34 | 73.5% | 3 | 4 | 7 | 42.9% | 1 | 3 | 4 | 25.0% | 2023 | 1 | 4 | 5 | 20.0% | 2 | 2 | 4 | 50.0% | — | — | — | — |
| 24 | 2023 | 27 | 16 | 43 | 62.8% | 4 | 4 | 8 | 50.0% | 4 | 4 | 8 | 50.0% | 2024 | 0 | 3 | 3 | 0.0% | 0 | 3 | 3 | 0.0% | 0 | 1 | 1 | 0.0% |
| 25 | 2024 | 13 | 15 | 28 | 46.4% | 6 | 5 | 11 | 54.5% | 8 | 3 | 11 | 72.7% | — | — | — | — | — | — | — | — | — | — | — | — | — |
| 26 | 2025 | 15 | 15 | 30 | 50.0% | 8 | 5 | 13 | 61.5% | 7 | 3 | 10 | 70.0% | 2026 | 4 | 5 | 9 | 44.4% | 0 | 1 | 1 | 0.0% | 0 | 1 | 1 | 0.0% |
| 27 | 2026 | 15 | 17 | 32 | 46.9% | 3 | 6 | 9 | 33.3% | 3 | 4 | 7 | 42.9% | — | — | — | — | — | — | — | — | — | — | — | — | — |
| Career | — | 108 | 90 | 198 | 54.5% | 31 | 33 | 64 | 48.4% | 31 | 19 | 50 | 62.0% | — | 9 | 22 | 31 | 29.0% | 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 298/312 of Liudmila Samsonova's and 42/42 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 | Liudmila Samsonova | 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 | 2019 | 10/10 | 2.4 | 3.5 | 55.1% | 58.6% | 44.1% | 58.7% | 38.7% | 52.0% | 40.7% | — | —/— | — | — | — | — | — | — | — | — | — |
| 21 | 2020 | 8/8 | 5.1 | 6.4 | 54.8% | 69.3% | 39.2% | 39.6% | 35.8% | 55.6% | 38.5% | — | —/— | — | — | — | — | — | — | — | — | — |
| 22 | 2021 | 39/39 | 5.9 | 4.5 | 56.2% | 71.3% | 46.9% | 56.1% | 41.3% | 60.7% | 40.8% | 2022 | 2/2 | 4.0 | 2.5 | 66.5% | 68.4% | 39.1% | 56.4% | 50.0% | 58.6% | 36.6% |
| 23 | 2022 | 45/45 | 5.3 | 3.1 | 57.0% | 72.3% | 55.0% | 62.8% | 48.0% | 64.6% | 43.0% | 2023 | 9/9 | 2.2 | 3.0 | 58.1% | 62.9% | 43.8% | 57.4% | 39.7% | 55.0% | 39.3% |
| 24 | 2023 | 57/59 | 5.9 | 4.6 | 55.0% | 72.1% | 47.7% | 51.4% | 46.3% | 61.1% | 43.2% | 2024 | 7/7 | 3.7 | 3.3 | 66.8% | 58.5% | 42.2% | 52.8% | 37.1% | 55.1% | 36.5% |
| 25 | 2024 | 49/50 | 4.7 | 5.0 | 50.4% | 70.5% | 48.8% | 58.1% | 46.0% | 59.6% | 42.8% | — | —/— | — | — | — | — | — | — | — | — | — |
| 26 | 2025 | 44/53 | 3.6 | 3.2 | 58.3% | 69.4% | 47.8% | 55.0% | 46.6% | 60.1% | 42.1% | 2026 | 11/11 | 5.0 | 3.8 | 66.2% | 64.3% | 45.4% | 62.5% | 55.9% | 58.1% | 40.0% |
| 27 | 2026 | 46/48 | 3.1 | 5.0 | 58.0% | 66.6% | 46.4% | 52.6% | 51.2% | 57.9% | 41.9% | — | —/— | — | — | — | — | — | — | — | — | — |
| Career | — | 298/312 | 4.7 | 4.3 | 55.6% | 70.0% | 48.3% | 55.4% | 46.2% | 60.2% | 42.2% | — | 42/42 | 3.5 | 3.9 | 59.9% | 63.1% | 42.5% | 56.0% | 43.5% | 55.1% | 38.5% |
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 | Liudmila Samsonova | 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 | 104.9 | -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 | 1487 | 91.2 | -2.87 | -2.16 | 0.673 | 41.8% | — | — | — | 20.0% | -3.20 | 0–1 | — | — | +0.16 |
| 19 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 2019 | 1463 | 99.5 | — | — | — | — | — | — | — | — | — | — | — | — | — |
| 20 | 2019 | 1555 | 111.6 | -2.30 | -2.08 | 0.847 | 47.0% | — | +29 | — | 39.1% | -0.78 | 2–1 (67%) | 1–2 (33%) | 101.1 | +0.06 | 2020 | 1450 | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| 21 | 2020 | 1621 | 122.3 | -0.37 | -1.05 | 0.867 | 46.7% | -27 | -8 | — | 31.6% | -1.37 | 1–2 (33%) | — | — | -0.41 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| 22 | 2021 | 1801 | 137.0 | +3.14 | -1.44 | 1.038 | 50.6% | -72 | -246 | +139 | 54.5% | +0.08 | 6–4 (60%) | 8–5 (62%) | 106.2 | -1.64 | 2022 | 1535 | 97.1 | -0.90 | -1.76 | 0.884 | 47.0% | — | — | — | 0.0% | -2.00 | — | 0–1 | — | +0.44 |
| 23 | 2022 | 1916 | 149.8 | +5.95 | +0.45 | 1.214 | 53.4% | +20 | -327 | -82 | 64.7% | +1.05 | 4–8 (33%) | 9–6 (60%) | 98.3 | +1.35 | 2023 | 1565 | 120.2 | -0.78 | -1.35 | 0.874 | 47.7% | -48 | +5 | — | 31.6% | -0.84 | 1–0 | 0–1 | — | +0.61 |
| 24 | 2023 | 1933 | 158.4 | +4.04 | +1.32 | 1.110 | 52.0% | +47 | -293 | -154 | 57.8% | +0.60 | 11–10 (52%) | 7–13 (35%) | 93.5 | -0.36 | 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 | 2024 | 1854 | 146.7 | +2.76 | +0.45 | 1.061 | 51.1% | -24 | -121 | +65 | 53.6% | +0.30 | 8–8 (50%) | 5–5 (50%) | 99.0 | +0.19 | 2025 | 1476 | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| 26 | 2025 | 1855 | 149.0 | +3.01 | +0.17 | 1.057 | 50.9% | -42 | -23 | +167 | 57.0% | +0.25 | 8–9 (47%) | 8–7 (53%) | 99.6 | +0.72 | 2026 | 1603 | 131.5 | +0.09 | -1.35 | 0.955 | 49.6% | -22 | — | — | 45.8% | -0.17 | 1–3 (25%) | 2–3 (40%) | 99.1 | -0.41 |
| 27 | 2026 | 1769 | 148.8 | +1.11 | +0.11 | 0.997 | 50.0% | -6 | +7 | +159 | 49.2% | -0.02 | 8–16 (33%) | 5–6 (45%) | 92.1 | +0.33 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| Career | — | 1969 | 150.2 | +3.06 | +0.15 | 1.062 | 51.1% | -7 | -117 | +65 | 54.9% | +0.30 | 48–58 (45%) | 43–44 (49%) | 95.3 | +0.08 | — | 1638 | 117.2 | -0.91 | -1.83 | 0.857 | 47.1% | -12 | +30 | — | 33.0% | -1.16 | 3–11 (21%) | 3–8 (27%) | 90.7 | +3.02 |
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 |
|---|---|---|---|---|---|
| Veronika Kudermetova | 2 | 6 | 8 | Feb 3, 2025 | H2H |
| Elena Rybakina | 4 | 3 | 7 | Aug 9, 2026 | H2H |
| Madison Keys | 2 | 5 | 7 | Jul 27, 2026 | H2H |
| Qinwen Zheng | 4 | 3 | 7 | Jun 1, 2025 | H2H |
| Jessica Pegula | 2 | 4 | 6 | Jan 9, 2026 | 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 |
| Antonia Ruzic | 0 | 1 | 1 | Oct 22, 2026 | H2H |