Head to head
2
Hard
2
Stan Wawrinka's wins on the left · Karen Khachanov's on the right · bar lengths share one scale
All meetings (4)
| 2021 | Rotterdam | Hard | R32 | Karen Khachanov | 6-4 7-5 |
| 2019 | Canada Masters | Hard | R32 | Karen Khachanov | 6-4 6-7(3) 6-2 |
| 2018 | Doha | Hard | R32 | Stan Wawrinka | 7-6(7) 6-4 |
| 2018 | St. Petersburg | Hard | R16 | Stan Wawrinka | 7-6(10) 7-6(1) |
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.