Head to head
1
Clay
1
Heinz Gunthardt's wins on the left · Trevor Allan's on the right · bar lengths share one scale
All meetings (2)
| 1985 | Gstaad | Clay | R16 | Heinz Gunthardt | 7-6 6-1 |
| 1984 | Gstaad | Clay | QF | Trevor Allan | 6-4 6-3 |
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.