Head to head
Rivalry summary
Stefan Simonsson and Trevor Allan met 2 times on the ATP tour between 1983 and 1984. 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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Stefan Simonsson's wins on the left · Trevor Allan's on the right · bar lengths share one scale
All meetings (2)
| 1984 | Rome | Clay | R64 | Stefan Simonsson | 6-0 6-4 |
| 1983 | Roland Garros | Clay | R128 | Trevor Allan | 6-4 6-2 6-0 |
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.