Head to head
2
Hard
6
1
Clay
0
0
Grass
2
Kei Nishikori's wins on the left · Roger Federer's on the right · bar lengths share one scale
Momentum
Running lead across all meetings, oldest to newest (walkovers excluded).
All meetings (11)
| 2019 | Wimbledon | Grass | QF | Roger Federer | 4-6 6-1 6-4 6-4 |
| 2018 | Tour Finals | Hard | RR | Kei Nishikori | 7-6(4) 6-3 |
| 2018 | Paris Masters | Hard | QF | Roger Federer | 6-4 6-4 |
| 2018 | Shanghai Masters | Hard | QF | Roger Federer | 6-4 7-6(4) |
| 2017 | Australian Open | Hard | R16 | Roger Federer | 6-7(4) 6-4 6-1 4-6 6-3 |
| 2015 | ATP Finals | Hard | RR | Roger Federer | 7-5 4-6 6-4 |
| 2014 | Tour Finals | Hard | RR | Roger Federer | 6-3 6-2 |
| 2014 | Halle | Grass | SF | Roger Federer | 6-3 7-6(4) |
| 2014 | Miami Masters | Hard | QF | Kei Nishikori | 3-6 7-5 6-4 |
| 2013 | Madrid Masters | Clay | R16 | Kei Nishikori | 6-4 1-6 6-2 |
| 2011 | Basel | Hard | F | Roger Federer | 6-1 6-3 |
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.