Jan Siemerink defeated Arnaud Clement 6-1 6-3 in the Copenhagen round of 32 on carpet. The upset overturned the form book — Arnaud Clement came in leading the head-to-head 3–1. Jan Siemerink narrowed the head-to-head to 3–2.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2001-08-27 | US Open | R64 | hard | Arnaud Clement | 6-7(4) 6-4 7-6(1) 6-1 |
| 1999-10-11 | Vienna | R32 | hard | Jan Siemerink | 5-7 7-6(5) 7-6(6) |
| 1999-04-26 | Munich | R32 | clay | Arnaud Clement | 6-4 6-4 |
| 1998-05-11 | Rome Masters | R64 | clay | Arnaud Clement | 6-1 6-4 |
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 (153 vs 200). ATP, WTA & Challenger.