Juan Carlos Saez defeated Ryusei Makiguchi 6-2 7-5 in the Argentina F1 round of 32 on clay. The result followed the form book — Juan Carlos Saez came in leading the head-to-head 2–0. Juan Carlos Saez extended the head-to-head to 3–0.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2018-05-21 | Argentina F2 | R32 | clay | Juan Carlos Saez | 6-1 6-2 |
| 2011-05-16 | Brazil F14 | QF | clay | Juan Carlos Saez | 6-1 6-3 |
Averages over each player's completed matches in the selected window. ATP, WTA & Challenger.