Felix Mantilla defeated Juan Antonio Marin 7-5 6-2 in the Bucharest round of 32 on clay. The upset overturned the form book — Juan Antonio Marin came in leading the head-to-head 1–0, but Felix Mantilla had been the form player, winning 3 of their last 8 on clay. Felix Mantilla claimed a first win over Juan Antonio Marin in two meetings, narrowing the head-to-head to 1–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2000-01-03 | Doha | R32 | hard | Juan Antonio Marin | 6-1 RET |
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 (156 vs 41). ATP, WTA & Challenger.