Javier Sanchez defeated Jaime Oncins 4-6 6-3 7-5 in the Bologna round of 32 on clay. The upset overturned the form book — Jaime Oncins came in leading the head-to-head 1–0, defending the title. Javier Sanchez claimed a first win over Jaime Oncins in two meetings, narrowing the head-to-head to 1–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 1991-05-27 | Roland Garros | R128 | clay | Jaime Oncins | 5-7 6-4 6-4 6-3 |
Averages over each player's completed matches in the selected window (104 vs 10). 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