Head to head
2
Clay
0
Mathias Werren's wins on the left · Graham Stilwell's on the right · bar lengths share one scale
All meetings (2)
| 1970 | Gstaad | Clay | R32 | Mathias Werren | 6-2 8-6 |
| 1968 | Hamburg | Clay | R64 | Mathias Werren | 6-1 5-7 6-1 2-6 6-2 |
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.