Albert Portas defeated Felix Mantilla 6-2 6-4 in the Stuttgart Outdoor quarter-final on clay. The upset overturned the form book — Felix Mantilla came in leading the head-to-head 3–1, but Albert Portas had been the form player, winning 3 of their last 6 on clay. Albert Portas narrowed the head-to-head to 3–2.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2004-08-09 | Sopot | R16 | clay | Felix Mantilla | 5-7 7-5 7-5 |
| 2003-02-17 | Buenos Aires | R32 | clay | Felix Mantilla | 6-3 6-1 |
| 2001-09-24 | Palermo | SF | clay | Felix Mantilla | 2-6 7-6(4) 6-3 |
| 1999-07-26 | Umag | R16 | clay | Albert Portas | 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 200). ATP, WTA & Challenger.