Facundo Juarez defeated Mariano Kestelboim 6-1 6-4 in the M15 Antalya 25 semi-final on clay. The upset overturned the form book — Mariano Kestelboim came in leading the head-to-head 1–0, but Facundo Juarez had been the form player, winning 5 of their last 9 on clay. Facundo Juarez claimed a first win over Mariano Kestelboim in two meetings, narrowing the head-to-head to 1–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2021-07-23 | M25 Gandia 1 | QF | clay | Mariano Kestelboim | 6-4 4-6 6-2 |
Averages over each player's completed matches in the selected window. ATP, WTA & Challenger.