By surface
| Surface | Coco Gauff | Hietala |
|---|---|---|
| Hard | 4 | 0 |
All meetings (4)
| Date | Tour | Tournament | Round | Surface | Winner | Set 1 | Set 2 | Set 3 | Set 4 | Set 5 |
|---|---|---|---|---|---|---|---|---|---|---|
| 2025-10-06 | WTA | Wuhan | Round of 16 | Hard | Coco Gauff | 6-3 | 6-2 | |||
| 2024-12-27 | WTA | United Cup | Quarterfinal | Hard | Coco Gauff | 7-64 | 6-2 | |||
| 2022-08-29 | WTA | US Open | Round of 16 | Hard | Coco Gauff | 7-5 | 7-5 | |||
| 2022-03-21 | WTA | Miami | Round of 32 | Hard | Coco Gauff | 7-61 | 7-5 |