Lilia Osterloh defeated Rossana De Los Rios 6-2 6-2 in the San Francisco CA 50K qualifying round on hard. The upset overturned the form book — Rossana De Los Rios came in leading the head-to-head 2–1. Lilia Osterloh narrowed the head-to-head to 2–2.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2008-04-28 | Fes | R32 | clay | Rossana De Los Rios | 6-4 6-4 |
| 2006-08-06 | Los Angeles | Q16 | hard | Lilia Osterloh | 6-4 6-4 |
| 2002-08-12 | Montreal | Q64 | hard | Rossana De Los Rios | 6-1 7-6(3) |
Averages over each player's completed matches in the selected window (52 vs 44). 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