Brian Baker defeated Rafael De Mesa 6-3 6-4 in the USA F9 qualifying round on hard. The upset overturned the form book — Rafael De Mesa came in leading the head-to-head 1–0, but Brian Baker had been the form player, winning 2 of their last 4 on hard. Brian Baker claimed a first win over Rafael De Mesa in two meetings, narrowing the head-to-head to 1–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2003-05-05 | USA F10 | QF | clay | Rafael De Mesa | 7-6(3) 6-3 |
Averages over each player's completed matches in the selected window. ATP, WTA & Challenger.