H2H data updated: 2026-09-13 00:00 UTC
Sofia Costoulas holds a 1–0 lead over Whitney Osuigwe in their WTA head-to-head. Across 1 main-draw meeting, Sofia Costoulas leads 1–0 on hard courts. Most recently, Sofia Costoulas won the 2026 ASB Classic first round 6-4 3-6 6-1.
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 |
|---|---|---|---|---|---|---|---|---|
| Sofia Costoulas | 6-4 3-6 6-1 | Whitney Osuigwe | Match data | Jan 5, 2026 | R32 | ASB Classic | WTA 250 | 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Whitney Osuigwe | #234 | #105 | 573 | 1,575 | 3 | 17 | 15.0% | 0 | 0 | 0 | 0 | 0 | 0 |
| Sofia Costoulas | #155 | #134 | 580 | 1,617 | 2 | 4 | 33.3% | 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 | Whitney Osuigwe | Sofia Costoulas | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Yr | W-L | Win % | Rank | Elo | GS | Titles | Yr | W-L | Win % | Rank | Elo | GS | Titles | |
| 16 | 2018 | 0–2 | 0.0% | #201 | 1,542 | 0 | 0 | — | — | — | — | — | — | — |
| 17 | 2019 | 1–4 | 20.0% | #138 | 1,461 | 0 | 0 | — | — | — | — | — | — | — |
| 18 | 2020 | 0–1 | 0.0% | #161 | 1,435 | 0 | 0 | — | — | — | — | — | — | — |
| 19 | 2021 | 0–3 | 0.0% | #254 | 1,329 | 0 | 0 | — | — | — | — | — | — | — |
| 21 | — | — | — | — | — | — | — | 2026 | 2–4 | 33.3% | #155 | 1,556 | 0 | 0 |
| 23 | 2025 | 1–4 | 20.0% | #158 | 1,405 | 0 | 0 | — | — | — | — | — | — | — |
| 24 | 2026 | 1–3 | 25.0% | #234 | 1,531 | 0 | 0 | — | — | — | — | — | — | — |
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 | Whitney Osuigwe | 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 | |
| 16 | 2018 | 1542 | 99.9 | -1.43 | -1.13 | 0.706 | 41.7% | — | — | — | 0.0% | -3.75 | — | — | — | +0.17 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| 17 | 2019 | 1462 | 111.9 | -0.68 | -0.38 | 0.796 | 45.1% | +3 | — | — | 27.3% | -1.73 | 0–1 | 1–2 (33%) | — | +0.14 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| 18 | 2020 | 1435 | 92.3 | -0.73 | -1.86 | 0.807 | 45.0% | — | — | — | 0.0% | -2.50 | — | — | — | +0.06 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| 19 | 2021 | 1330 | 92.6 | -3.89 | -2.04 | 0.614 | 37.2% | — | — | — | 0.0% | -4.33 | — | — | — | +0.26 | 2024 | 1481 | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| 20 | 2022 | 1288 | 100.1 | — | — | — | — | — | — | — | — | — | — | — | — | — | 2025 | 1523 | 97.0 | — | — | — | — | — | — | — | — | — | — | — | — | — |
| 21 | 2023 | 1281 | 93.3 | — | — | — | — | — | — | — | — | — | — | — | — | — | 2026 | 1557 | 114.0 | -0.91 | +0.22 | 1.002 | 49.9% | +42 | — | — | 40.0% | -0.20 | 1–2 (33%) | 0–1 | — | +0.65 |
| 22 | 2024 | 1343 | 94.8 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| 23 | 2025 | 1406 | 110.7 | -4.15 | -0.76 | 0.784 | 44.6% | +9 | — | — | 20.0% | -2.10 | — | 0–1 | — | +0.23 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| 24 | 2026 | 1531 | 111.3 | -1.64 | -2.96 | 0.809 | 45.9% | +7 | — | — | 30.0% | -1.10 | 1–1 | 0–1 | — | +0.33 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| Career | — | 1575 | 105.3 | -2.30 | -1.39 | 0.753 | 43.6% | +6 | — | — | 18.6% | -2.26 | 1–2 (33%) | 1–4 (20%) | 96.8 | +5.95 | — | 1618 | 109.1 | -0.91 | +0.22 | 1.002 | 49.9% | +42 | — | — | 40.0% | -0.20 | 1–2 (33%) | 0–1 | — | +10.83 |
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 |
|---|---|---|---|---|---|
| Hailey Baptiste | 0 | 2 | 2 | Jul 28, 2025 | H2H |
| Maya Joint | 0 | 1 | 1 | Jul 27, 2026 | H2H |
| Rebeka Masarova | 0 | 1 | 1 | Feb 25, 2026 | H2H |
| Elizabeth Mandlik | 1 | 0 | 1 | Feb 23, 2026 | H2H |
| Sofia Costoulas | 0 | 1 | 1 | Jan 5, 2026 | H2H |
| Opponent | W | L | M | Last Played | 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 |
| Kaitlin Quevedo | 1 | 0 | 1 | Jan 7, 2026 | H2H |