Head to head
3
Hard
0
1
Clay
0
Heinz Gunthardt's wins on the left · Stanislav Birner's on the right · bar lengths share one scale
All meetings (4)
| 1984 | Toulouse | Hard | R16 | Heinz Gunthardt | 6-2 6-3 |
| 1982 | Geneva | Clay | R32 | Heinz Gunthardt | 7-6 6-1 |
| 1980 | Toronto | Hard | R32 | Heinz Gunthardt | 6-3 6-3 |
| 1979 | Cologne | Hard | R16 | Heinz Gunthardt | 6-4 6-4 |
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.