H2H data updated: 2026-09-23 00:00 UTC
Tatiana Prozorova holds a 1–0 lead over Sofia Costoulas in their WTA head-to-head. Across 1 main-draw meeting, Tatiana Prozorova leads 1–0 on hard courts. Most recently, Tatiana Prozorova won the 2026 Singapore Tennis Open first round 5-7 7-6(2) 6-2.
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 |
|---|---|---|---|---|---|---|---|---|
| Tatiana Prozorova | 5-7 7-6(2) 6-2 | Sofia Costoulas | Match data | Sep 22, 2026 | R32 | Singapore Tennis 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Tatiana Prozorova | #180 | #140 | 519 | 1,662 | 3 | 9 | 25.0% | 0 | 0 | 0 | 0 | 0 | 0 |
| Sofia Costoulas | #152 | #134 | 580 | 1,617 | 2 | 5 | 28.6% | 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 | Tatiana Prozorova | Sofia Costoulas | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Yr | W-L | Win % | Rank | Elo | GS | Titles | Yr | W-L | Win % | Rank | Elo | GS | Titles | |
| 19 | 2023 | 1–3 | 25.0% | #231 | 1,533 | 0 | 0 | — | — | — | — | — | — | — |
| 20 | 2024 | 0–2 | 0.0% | #247 | 1,539 | 0 | 0 | — | — | — | — | — | — | — |
| 21 | 2025 | 0–3 | 0.0% | #186 | 1,564 | 0 | 0 | 2026 | 2–5 | 28.6% | #152 | 1,544 | 0 | 0 |
| 22 | 2026 | 2–1 | 66.7% | #180 | 1,647 | 0 | 0 | — | — | — | — | — | — | — |
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 | Tatiana Prozorova | Sofia Costoulas | ||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Yr | Hard | Clay | Yr | Hard | Clay | |||||||||||||
| W | L | M | Win % | W | L | M | Win % | W | L | M | Win % | W | L | M | Win % | |||
| 19 | 2023 | 0 | 1 | 1 | 0.0% | 1 | 2 | 3 | 33.3% | — | — | — | — | — | — | — | — | — |
| 20 | 2024 | 0 | 2 | 2 | 0.0% | — | — | — | — | — | — | — | — | — | — | — | — | — |
| 21 | 2025 | 0 | 3 | 3 | 0.0% | — | — | — | — | 2026 | 2 | 4 | 6 | 33.3% | 0 | 1 | 1 | 0.0% |
| 22 | 2026 | 2 | 1 | 3 | 66.7% | — | — | — | — | — | — | — | — | — | — | — | — | — |
| Career | — | 2 | 7 | 9 | 22.2% | 1 | 2 | 3 | 33.3% | — | 2 | 4 | 6 | 33.3% | 0 | 1 | 1 | 0.0% |
Seasons are aligned by the age each player spent most of that calendar year. Detailed serve and return statistics available for 10/13 of Tatiana Prozorova's and 7/7 of Sofia Costoulas'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 | Tatiana Prozorova | Sofia Costoulas | ||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 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% | |
| 19 | 2023 | 4/4 | 1.0 | 5.0 | 64.9% | 54.7% | 43.9% | 51.0% | 55.2% | 50.3% | 40.2% | — | —/— | — | — | — | — | — | — | — | — | — |
| 20 | 2024 | 2/2 | 2.0 | 3.0 | 67.4% | 59.4% | 40.6% | 51.3% | 52.6% | 53.2% | 40.7% | — | —/— | — | — | — | — | — | — | — | — | — |
| 21 | 2025 | 1/3 | 0.0 | 1.0 | 66.1% | 51.4% | 36.8% | 16.7% | 0.0% | 46.4% | 27.7% | 2026 | 7/7 | 2.9 | 3.7 | 52.8% | 66.2% | 44.7% | 58.3% | 40.9% | 56.6% | 42.5% |
| 22 | 2026 | 3/4 | 3.7 | 4.3 | 61.1% | 63.2% | 49.4% | 50.9% | 39.6% | 57.8% | 41.3% | — | —/— | — | — | — | — | — | — | — | — | — |
| Career | — | 10/13 | 1.9 | 4.0 | 64.4% | 57.9% | 44.2% | 47.6% | 44.5% | 52.8% | 39.3% | — | 7/7 | 2.9 | 3.7 | 52.8% | 66.2% | 44.7% | 58.3% | 40.9% | 56.6% | 42.5% |
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 | Tatiana Prozorova | Sofia Costoulas | ||||||||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 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 | |
| 19 | 2023 | 1533 | 105.4 | -0.66 | -1.13 | 0.809 | 45.7% | — | +29 | — | 33.3% | -1.89 | 0–1 | 1–0 | — | -0.11 | 2024 | 1481 | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| 20 | 2024 | 1539 | 111.4 | -2.62 | -3.85 | 0.869 | 47.5% | — | — | — | 33.3% | -1.00 | 0–2 | — | — | -0.07 | 2025 | 1523 | 97.0 | — | — | — | — | — | — | — | — | — | — | — | — | — |
| 21 | 2025 | 1565 | 121.5 | +0.33 | -1.63 | 0.516 | 37.9% | +6 | — | — | 14.3% | -1.86 | 0–1 | — | — | -0.36 | 2026 | 1544 | 114.3 | -0.36 | -0.14 | 0.980 | 49.5% | +36 | — | — | 38.9% | -0.33 | 1–3 (25%) | 0–2 | — | +0.74 |
| 22 | 2026 | 1648 | 106.3 | -0.10 | -0.86 | 0.979 | 49.2% | +29 | — | — | 50.0% | +0.12 | 2–0 | 1–0 | — | 0.00 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| Career | — | 1663 | 115.3 | -0.79 | -1.64 | 0.833 | 46.3% | +18 | +29 | — | 33.3% | -1.17 | 2–4 (33%) | 2–0 | — | -4.50 | — | 1618 | 109.5 | -0.36 | -0.14 | 0.980 | 49.5% | +36 | — | — | 38.9% | -0.33 | 1–3 (25%) | 0–2 | — | +10.57 |
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 |
|---|---|---|---|---|---|
| Sofia Costoulas | 1 | 0 | 1 | Sep 22, 2026 | H2H |
| Peyton Stearns | 0 | 1 | 1 | Jul 30, 2026 | H2H |
| Solana Sierra | 1 | 0 | 1 | Jul 27, 2026 | H2H |
| Zeynep Sonmez | 0 | 1 | 1 | Oct 29, 2025 | H2H |
| Barbora Krejcikova | 0 | 1 | 1 | Sep 16, 2025 | H2H |
| Opponent | W | L | M | Last Played | H2H |
|---|---|---|---|---|---|
| Tatiana Prozorova | 0 | 1 | 1 | Sep 22, 2026 | H2H |
| Ayla Aksu | 0 | 1 | 1 | Jul 20, 2026 | H2H |
| Tereza Valentova | 0 | 1 | 1 | Jul 14, 2026 | H2H |
| Hanne Vandewinkel | 0 | 1 | 1 | Mar 31, 2026 | H2H |
| Iva Jovic | 0 | 1 | 1 | Jan 9, 2026 | H2H |