Ryusei Makiguchi defeated Mauricio Estivariz 6-3 6-3 in the Bolivia F3 round of 32 on clay. The upset overturned the form book — Mauricio Estivariz came in leading the head-to-head 1–0. Ryusei Makiguchi claimed a first win over Mauricio Estivariz in two meetings, narrowing the head-to-head to 1–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2008-09-15 | Bolivia F2 | R32 | clay | Mauricio Estivariz | 6-3 6-2 |
Averages over each player's completed matches in the selected window. ATP, WTA & Challenger.