Diego Ayala defeated Lazaro Navarro Batles 6-3 7-6 in the Central America Masters 2 round of 16 on clay. The upset overturned the form book — Lazaro Navarro Batles came in leading the head-to-head 1–0. Diego Ayala claimed a first win over Lazaro Navarro Batles in two meetings, narrowing the head-to-head to 1–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 1999-11-01 | Mexico F7 | R32 | hard | Lazaro Navarro Batles | 7-6 6-1 |
Averages over each player's completed matches in the selected window. ATP, WTA & Challenger.