Head to head
3
Hard
1
1
Clay
0
1
Carpet
1
Richard Krajicek's wins on the left · Jan Siemerink's on the right · bar lengths share one scale
Momentum
Running lead across all meetings, oldest to newest (walkovers excluded).
All meetings (7)
| 1999 | Miami Masters | Hard | R32 | Richard Krajicek | 6-3 6-2 |
| 1999 | Indian Wells Masters | Hard | R16 | Richard Krajicek | 6-4 6-4 |
| 1998 | Rotterdam | Carpet | SF | Jan Siemerink | 6-4 4-6 6-4 |
| 1996 | New Haven | Hard | QF | Jan Siemerink | 6-4(3) 6-4 |
| 1995 | Monte Carlo Masters | Clay | R32 | Richard Krajicek | 3-6 6-3 6-4 |
| 1995 | Rotterdam | Carpet | R16 | Richard Krajicek | 7-5 6-4 |
| 1994 | US Open | Hard | R128 | Richard Krajicek | 7-6(2) 6-4 6-7(2) 6-7(8) 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.