Thomas Muster defeated Jan Siemerink 6-7 7-6 7-6 in the Cincinnati Masters quarter-final on hard. The result followed the form book — Thomas Muster came in leading the head-to-head 1–0. Thomas Muster extended the head-to-head to 2–0.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 1998-10-12 | Vienna | R32 | hard | Thomas Muster | 6-2 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 (129 vs 199). ATP, WTA & Challenger.