Marcos Ondruska defeated Luis Herrera 7-5 6-1 in the Washington round of 64 on hard. The upset overturned the form book — Luis Herrera came in defending last year's round of 16. Marcos Ondruska extended the head-to-head to 2–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 1997-06-09 | Queen's Club | R64 | grass | Luis Herrera | 7-6 4-6 7-6 |
| 1993-06-07 | Queen's Club | R32 | grass | Marcos Ondruska | 6-2 6-3 |
Averages over each player's completed matches in the selected window (50 vs 8). 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