Head to head
Rivalry summary
Jan Siemerink and Hernan Gumy met 2 times on the ATP tour between 1996 and 1996. 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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Jan Siemerink's wins on the left · Hernan Gumy's on the right · bar lengths share one scale
All meetings (2)
| 1996 | Roland Garros | Clay | R128 | Jan Siemerink | 7-6(4) 6-3 6-1 |
| 1996 | Hamburg Masters | Clay | R64 | Hernan Gumy | 6-4 6-7(5) 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.