Juan Carlos Saez defeated Mariano Kestelboim 6-2 6-3 in the Tunisia F11 round of 32 on clay. The upset overturned the form book — Mariano Kestelboim came in leading the head-to-head 2–0, but Juan Carlos Saez had been the form player, winning 6 of their last 10 on clay. Juan Carlos Saez claimed a first win over Mariano Kestelboim in three meetings, narrowing the head-to-head to 2–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2017-11-20 | Chile F1 | SF | clay | Mariano Kestelboim | 6-4 6-3 |
| 2017-09-04 | Argentina F6 | R32 | clay | Mariano Kestelboim | 7-6(3) 4-6 6-4 |
Averages over each player's completed matches in the selected window (3 vs 103). ATP, WTA & Challenger.
Each player's serve crossed against the other's return, converted to expected hold of serve. Recent completed matches, ATP, WTA & Challenger. About