If they played today
Sofia Costoulas
68%
Sets 2–0
Medium confidence
Nao Hibino
32%
2–0
39%
2–1
29%
1–2
18%
0–2
14%
Chance of a third set 47%
Current ratings and the head-to-head record, for a best-of-three match with no tournament attached. For the forecast of a scheduled match, open the match page.
Side by side
| Sofia Costoulas | Nao Hibino | |
| 1630 (#107) | Rating | 1540 (#297) |
| 32–11 (74%) | Win-loss | 17–16 (52%) |
| 22 | ATP/WTA matches | 23 |
| WWLWL | Recent form | WLWWW |
All meetings (1)
| 2026-07-18 | Sofia Costoulas | 2–1 6-7, 7-5, 6-4 | Prague |
Last five: Sofia Costoulas
| 2026-09-22 | L | Tatiana Prozorova | 1-2 | Singapore |
| 2026-08-25 | W | Jennifer Ruggeri | 2-0 | US Open, Women |
| 2026-07-20 | L | Ayla Aksu | 1-2 | Prague |
| 2026-07-19 | W | Ayla Aksu | 2-0 | Prague |
| 2026-07-18 | W | Nao Hibino | 2-1 | Prague |
Full record for Sofia Costoulas →
Last five: Nao Hibino
| 2026-09-21 | W | Kristina Mladenović | 2-1 | Singapore |
| 2026-09-20 | W | Aoi Ito | 2-1 | Singapore |
| 2026-09-19 | W | Kai Ning Chanya Ng | 2-0 | Singapore |
| 2026-09-14 | L | Magdalena Frech | 0-2 | Guadalajara |
| 2026-09-13 | W | Nadiia Kichenok | 2-0 | Guadalajara |