Carlos Palencia defeated Miguel Gallardo Valles 6-1 3-6 6-3 in the Mexico F1 round of 16 on hard. The upset overturned the form book — Miguel Gallardo Valles came in leading the head-to-head 3–0. Carlos Palencia claimed a first win over Miguel Gallardo Valles in four meetings, narrowing the head-to-head to 3–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2008-11-03 | Mexico F15 | SF | clay | Miguel Gallardo Valles | 6-2 7-5 |
| 2007-06-25 | USA F14 | R32 | hard | Miguel Gallardo Valles | 6-2 3-2 |
| 2006-08-28 | Mexico F14 | QF | hard | Miguel Gallardo Valles | 6-2 6-7(6) 7-5 |
Averages over each player's completed matches in the selected window. ATP, WTA & Challenger.