Vincent Spadea defeated Daniel Vacek 6-2 3-6 6-3 6-2 in the US Open round of 128 on hard. The upset overturned the form book — Daniel Vacek came in leading the head-to-head 2–0, defending last year's round of 16. Vincent Spadea claimed a first win over Daniel Vacek in three meetings, narrowing the head-to-head to 2–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 1998-08-03 | Canada Masters | R16 | hard | Daniel Vacek | 4-6 6-1 6-4 |
| 1996-08-12 | New Haven | R64 | hard | Daniel Vacek | 7-6(5) 6-3 |
Averages over each player's completed matches in the selected window (200 vs 180). ATP, WTA & Challenger.
Each player's serve crossed against the other's return, converted to expected hold of serve. Recent completed matches, ATP, WTA & Challenger. About