Head to head
1
Clay
1
Kei Nishikori's wins on the left · Pere Riba's on the right · bar lengths share one scale
All meetings (2)
| 2011 | Madrid Masters | Clay | R64 | Pere Riba | 6-2 6-4 |
| 2011 | Barcelona | Clay | R64 | Kei Nishikori | 6-2 RET |
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.