Head to head
1
Clay
1
0
Grass
1
Hans Kary's wins on the left · Ray Ruffels's on the right · bar lengths share one scale
All meetings (3)
| 1976 | Boston | Clay | R32 | Hans Kary | 6-4 6-4 |
| 1974 | Monte-Carlo WCT | Clay | R32 | Ray Ruffels | 6-2 7-5 |
| 1971 | Queen's Club | Grass | R64 | Ray Ruffels | 6-1 7-5 |
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.