Nicolas Kiefer defeated Jan Siemerink 3-6 6-4 7-5 in the Antwerp round of 32 on hard. Nicolas Kiefer extended the head-to-head to 2–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2001-04-06 | Davis Cup WG QF: NED vs GER | RR | carpet | Jan Siemerink | 6-3 7-6(5) 3-6 6-3 |
| 1999-06-07 | Halle | QF | grass | Nicolas Kiefer | 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 (200 vs 199). ATP, WTA & Challenger.