Mark Philippoussis defeated Mariano Zabaleta 4-6 6-3 7-5 in the Dusseldorf round robin on clay. The result followed the form book — Mark Philippoussis came in leading the head-to-head 2–0. Mark Philippoussis extended the head-to-head to 3–0.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2003-06-23 | Wimbledon | R128 | grass | Mark Philippoussis | 6-3 4-6 6-3 6-2 |
| 2003-03-03 | Scottsdale | SF | hard | Mark Philippoussis | 6-3 7-6(8) |
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 (64 vs 114). ATP, WTA & Challenger.