Head to head
0
Hard
2
1
Clay
0
Jan Siemerink's wins on the left · Justin Gimelstob's on the right · bar lengths share one scale
All meetings (3)
| 2000 | Tashkent | Hard | R32 | Justin Gimelstob | 6-4 6-3 |
| 2000 | Orlando | Clay | R32 | Jan Siemerink | 4-6 6-2 7-5 |
| 1997 | Toulouse | Hard | R16 | Justin Gimelstob | 3-6 7-6(7) 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.