By surface
| Surface | Kei Nishikori | Ryan Harrison |
|---|---|---|
| Hard | 3 | 0 |
All meetings (3)
| Date | Tour | Tournament | Round | Surface | Winner | Set 1 | Set 2 | Set 3 | Set 4 | Set 5 |
|---|---|---|---|---|---|---|---|---|---|---|
| 2016-02-08 | ATP | Memphis | Round of 16 | Hard | Kei Nishikori | 6-2 | 7-5 | |||
| 2015-03-12 | ATP | Indian Wells Masters | Round of 64 | Hard | Kei Nishikori | 6-4 | 6-4 | |||
| 2015-02-09 | ATP | Memphis | Round of 16 | Hard | Kei Nishikori | 3-6 | 6-3 | 6-4 |