Head to head
3
Hard
2
1
Clay
0
2
Grass
0
Juan Martin del Potro's wins on the left · Kei Nishikori's on the right · bar lengths share one scale
Momentum
Running lead across all meetings, oldest to newest (walkovers excluded).
All meetings (8)
| 2018 | Miami Masters | Hard | R32 | Juan Martin del Potro | 6-2 6-2 |
| 2017 | Washington | Hard | R16 | Kei Nishikori | 6-4 7-5 |
| 2017 | Rome Masters | Clay | R16 | Juan Martin del Potro | 7-6(4) 6-3 |
| 2016 | Basel | Hard | QF | Kei Nishikori | 7-5 6-4 |
| 2012 | London Olympics | Grass | QF | Juan Martin del Potro | 6-4 7-6(4) |
| 2012 | Wimbledon | Grass | R32 | Juan Martin del Potro | 6-3 7-6(3) 6-1 |
| 2009 | San Jose | Hard | R16 | Juan Martin del Potro | 6-2 6-2 |
| 2008 | US Open | Hard | R16 | Juan Martin del Potro | 6-3 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.