Nicolas Lapentti defeated Thomas Muster 2-6 6-1 6-2 7-6 in the Roland Garros round of 128 on clay. The upset overturned the form book — Thomas Muster came in leading the head-to-head 1–0, defending last year's quarter-final. Nicolas Lapentti claimed a first win over Thomas Muster in two meetings, narrowing the head-to-head to 1–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 1998-08-24 | Boston | R16 | 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 (200 vs 17). ATP, WTA & Challenger.