Felix Mantilla defeated Thomas Muster 6-4 6-2 4-6 6-3 in the Roland Garros quarter-final on clay. The upset overturned the form book — Thomas Muster came in leading the head-to-head 2–1, defending last year's round of 32, but Felix Mantilla had been the form player, winning 3 of their last 7 on clay. Felix Mantilla 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 |
| 1998-05-11 | Rome Masters | R32 | clay | Thomas Muster | 6-4 3-6 6-4 |
| 1995-08-07 | San Marino | R16 | clay | Thomas Muster | 6-3 6-2 |
Averages over each player's completed matches in the selected window (200 vs 69). 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