Head to head
Rivalry summary
Heinz Gunthardt and Trevor Allan met 2 times on the ATP tour between 1984 and 1985. Their head-to-head is level at 1–1. By surface, they are level 1–1 on clay.
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Clay
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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.