Head to head
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Hard
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John Isner's wins on the left · Kei Nishikori's on the right · bar lengths share one scale
All meetings (3)
| 2016 | Indian Wells Masters | Hard | R16 | Kei Nishikori | 1-6 7-6(2) 7-6(5) |
| 2015 | Washington | Hard | F | Kei Nishikori | 4-6 6-4 6-4 |
| 2015 | Miami Masters | Hard | QF | John Isner | 6-4 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.