01/By surface
each with its own count, at equal weight
Hard
Never on hard
no meeting on this surface
Clay
2-1
C. leads 2-1 in 3 meetings on clay
Grass
Never on grass
no meeting on this surface
02/Every meeting
3 rows, newest first
| Date | Tournament | Surface | Round | Winner | Score, winner first | Ranks, C. first |
|---|---|---|---|---|---|---|
| May 21, 2026 | Geneva OpenATP250 | clay | quarterfinal | Ruud C. | 6-4, 6-3 | 17 v 61 |
| Apr 7, 2026 | Monte Carlo MastersMasters 1000 | clay | 1st round | Ruud C. | 6-3, 6-4 | 12 v 44 |
| Apr 10, 2025 | Monte Carlo MastersMasters 1000 | clay | 3rd round | Popyrin A. | 6-4, 3-6, 7-5 | 7 v 27 |
A record, never a share of meetings. Main-draw singles since 2013; a meeting ended by retirement is counted with the sets that were played and marked; a walkover is listed and counted in neither column. Ruud C. and Popyrin A. each carry the table against every opponent faced.