Lester Cook defeated Cristian Paiz 7-6 6-0 in the Mexico F6 qualifying round on hard. The upset overturned the form book — Cristian Paiz came in leading the head-to-head 1–0. Lester Cook claimed a first win over Cristian Paiz in two meetings, narrowing the head-to-head to 1–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2006-05-15 | Mexico F7 | R32 | clay | Cristian Paiz | 4-6 6-1 6-1 |