By surface
| Surface | Ann Li | John Kniffen |
|---|---|---|
| Hard | 2 | 0 |
All meetings (2)
| Date | Tour | Tournament | Round | Surface | Winner | Set 1 | Set 2 | Set 3 | Set 4 | Set 5 |
|---|---|---|---|---|---|---|---|---|---|---|
| 2026-08-31 | WTA | US Open | Round of 32 | Hard | Ann Li | 7-5 | 6-3 | |||
| 2025-08-25 | WTA | US Open | Round of 32 | Hard | Ann Li | 7-5 | 6-3 |
| Surface | Ann Li | John Kniffen |
|---|---|---|
| Hard | 2 | 0 |
| Date | Tour | Tournament | Round | Surface | Winner | Set 1 | Set 2 | Set 3 | Set 4 | Set 5 |
|---|---|---|---|---|---|---|---|---|---|---|
| 2026-08-31 | WTA | US Open | Round of 32 | Hard | Ann Li | 7-5 | 6-3 | |||
| 2025-08-25 | WTA | US Open | Round of 32 | Hard | Ann Li | 7-5 | 6-3 |