Thomas Muster defeated Felix Mantilla 6-3 6-2 in the San Marino round of 16 on clay. The upset overturned the form book — Felix Mantilla came in leading the head-to-head 2–1. Thomas Muster narrowed the head-to-head to 2–2.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 1999-04-05 | Estoril | R32 | clay | Felix Mantilla | 6-3 6-2 |
| 1998-05-25 | Roland Garros | QF | clay | Felix Mantilla | 6-4 6-2 4-6 6-3 |
| 1998-05-11 | Rome Masters | R32 | clay | Thomas Muster | 6-4 3-6 6-4 |
Averages over each player's completed matches in the selected window (133 vs 200). ATP, WTA & Challenger.
Each player's serve crossed against the other's return, converted to expected hold of serve. Recent completed matches, ATP, WTA & Challenger. About