By surface
| Surface | Gabriel Diallo | Billy Harris |
|---|---|---|
| Grass | 1 | 1 |
All meetings (2)
| Date | Tour | Tournament | Round | Surface | Winner | Set 1 | Set 2 | Set 3 | Set 4 | Set 5 |
|---|---|---|---|---|---|---|---|---|---|---|
| 2025-06-16 | ATP | Queen's Club | Round of 32 | Grass | Gabriel Diallo | 6-1 | 3-6 | 6-4 | ||
| 2024-07-15 | ATP | Newport | Round of 32 | Grass | Billy Harris | 6-74 | 5-7 |