Daniel Vacek defeated Mark Philippoussis 7-6 7-5 6-2 in the US Open round of 32 on hard. The upset overturned the form book — Mark Philippoussis came in leading the head-to-head 1–0. Daniel Vacek claimed a first win over Mark Philippoussis in two meetings, narrowing the head-to-head to 1–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 1998-11-02 | Paris Masters | R64 | hard | Mark Philippoussis | 7-6(5) 7-6(6) |
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 (181 vs 200). ATP, WTA & Challenger.