Head to head
Rivalry summary
Jan Siemerink and Julian Alonso met 1 times on the ATP tour between 1998 and 1998. Jan Siemerink leads the head-to-head 1–0 against Julian Alonso.
1
Hard
0
Jan Siemerink's wins on the left · Julian Alonso's on the right · bar lengths share one scale
All meetings (1)
| 1998 | Long Island | Hard | R32 | Jan Siemerink | 4-6 6-1 6-4 |
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.