Head to head
3
Hard
0
Kei Nishikori's wins on the left · Ryan Harrison's on the right · bar lengths share one scale
All meetings (3)
| 2016 | Memphis | Hard | R16 | Kei Nishikori | 6-2 7-5 |
| 2015 | Indian Wells Masters | Hard | R64 | Kei Nishikori | 6-4 6-4 |
| 2015 | Memphis | Hard | R16 | Kei Nishikori | 3-6 6-3 6-4 |
Methodology
Head-to-head totals and surface splits exclude walkovers (no match was played), which follows ATP convention — walkover meetings still appear in the match list. The momentum chart plots the running lead across all counted meetings, oldest to newest.