Felix Mantilla defeated Boris Becker 7-6 6-2 in the Hamburg Masters round of 16 on clay. The upset overturned the form book — Boris Becker came in leading the head-to-head 2–0. Felix Mantilla claimed a first win over Boris Becker in three meetings, narrowing the head-to-head to 2–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 1998-07-20 | Stuttgart Outdoor | R16 | clay | Boris Becker | 7-6(2) 7-5 |
| 1998-07-06 | Gstaad | QF | clay | Boris Becker | 6-4 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 67). ATP, WTA & Challenger.