Head to head
1
Hard
4
1
Clay
1
0
Grass
1
Nicolas Lapentti's wins on the left · Sjeng Schalken's on the right · bar lengths share one scale
Momentum
Running lead across all meetings, oldest to newest (walkovers excluded).
All meetings (8)
| 2003 | Wimbledon | Grass | R64 | Sjeng Schalken | 6-2 3-6 6-7(3) 7-6(4) 6-3 |
| 2001 | Munich | Clay | R32 | Sjeng Schalken | 6-7(6) 6-3 6-4 |
| 2000 | Shanghai | Hard | QF | Sjeng Schalken | 6-3 6-4 |
| 2000 | Tokyo | Hard | F | Sjeng Schalken | 6-4 3-6 6-1 |
| 1999 | Davis Cup WG PO: ECU vs NED | Clay | RR | Nicolas Lapentti | 1-6 3-6 6-0 7-6(5) 6-3 |
| 1997 | New Haven | Hard | R64 | Nicolas Lapentti | 6-1 RET |
| 1996 | Indian Wells Masters | Hard | R64 | Sjeng Schalken | 7-6(4) 6-3 |
| 1996 | Jakarta | Hard | R16 | Sjeng Schalken | 6-3 4-6 6-1 |
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.