Jan Siemerink defeated Sjeng Schalken 2-6 6-3 6-4 3-6 6-3 in the Australian Open round of 128 on hard. Jan Siemerink extended the head-to-head to 3–2.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2001-07-16 | Amsterdam | R16 | clay | Sjeng Schalken | 3-6 6-4 6-4 |
| 2001-06-18 | s Hertogenbosch | R32 | grass | Sjeng Schalken | 6-3 6-4 |
| 1998-08-10 | Cincinnati Masters | R64 | hard | Jan Siemerink | 1-6 6-1 7-6(2) |
| 1997-10-20 | Stuttgart Masters | R64 | carpet | Jan Siemerink | 6-4 6-2 |
Each player's serve crossed against the other's return, converted to expected hold of serve. Recent completed matches, ATP, WTA & Challenger. About
Averages over each player's completed matches in the selected window (30 vs 200). ATP, WTA & Challenger.