Miguel Gallardo Valles defeated Lester Cook 3-6 7-5 6-2 in the Mexico F17 semi-final on hard. The upset overturned the form book — Lester Cook came in leading the head-to-head 2–0. Miguel Gallardo Valles claimed a first win over Lester Cook in three meetings, narrowing the head-to-head to 2–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2007-01-29 | Costa Rica F1 | SF | hard | Lester Cook | 4-6 7-5 6-3 |
| 2006-08-28 | Mexico F14 | F | hard | Lester Cook | 7-6(3) 4-6 7-6(2) |
Averages over each player's completed matches in the selected window. ATP, WTA & Challenger.