Head to head
4
Hard
4
1
Clay
0
Kei Nishikori's wins on the left · Kevin Anderson's on the right · bar lengths share one scale
Momentum
Running lead across all meetings, oldest to newest (walkovers excluded).
All meetings (9)
| 2018 | Tour Finals | Hard | RR | Kevin Anderson | 6-0 6-1 |
| 2018 | Paris Masters | Hard | R16 | Kei Nishikori | 6-4 6-4 |
| 2018 | Vienna | Hard | F | Kevin Anderson | 6-3 7-6(3) |
| 2018 | New York | Hard | SF | Kevin Anderson | 6-1 3-6 7-6(4) |
| 2017 | Geneva | Clay | QF | Kei Nishikori | 2-6 6-4 7-6(6) |
| 2017 | Miami Masters | Hard | R64 | Kei Nishikori | 6-4 6-3 |
| 2015 | Shanghai Masters | Hard | R16 | Kevin Anderson | 7-6(10) 7-6(3) |
| 2015 | Acapulco | Hard | SF | Kei Nishikori | 6-2 3-6 6-3 |
| 2015 | Memphis | Hard | F | Kei Nishikori | 6-4 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.