By surface
| Surface | Kei Nishikori | Tommy Paul |
|---|---|---|
| Hard | 1 | 1 |
All meetings (2)
| Date | Tour | Tournament | Round | Surface | Winner | Set 1 | Set 2 | Set 3 | Set 4 | Set 5 |
|---|---|---|---|---|---|---|---|---|---|---|
| 2025-01-13 | ATP | Australian Open | Round of 64 | Hard | Tommy Paul | 7-63 | 0-6 | 3-6 | 1-6 | |
| 2017-07-31 | ATP | Washington | Quarterfinal | Hard | Kei Nishikori | 3-6 | 7-68 | 6-4 |