Head to head
1
Clay
1
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.