Grant Stafford defeated Marcos Ondruska 7-6 6-0 in the USA 1 Masters 4 round of 32 on clay. The upset overturned the form book — Marcos Ondruska came in leading the head-to-head 3–0. Grant Stafford claimed a first win over Marcos Ondruska in four meetings, narrowing the head-to-head to 3–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 1997-07-28 | Canada Masters | R64 | hard | Marcos Ondruska | 4-6 7-5 6-2 |
| 1996-07-15 | Washington | R64 | hard | Marcos Ondruska | 5-7 7-6(7) 6-2 |
| 1995-08-14 | Indianapolis | R64 | hard | Marcos Ondruska | 6-3 4-6 6-2 |
Averages over each player's completed matches in the selected window (78 vs 50). 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