Admir Kalender defeated Roko Horvat 1-6 6-3 6-4 in the M15 Litija 1 round of 32 on clay. The upset overturned the form book — Roko Horvat came in leading the head-to-head 1–0, but Admir Kalender had been the form player, winning 2 of their last 6 on clay. Admir Kalender claimed a first win over Roko Horvat in two meetings, narrowing the head-to-head to 1–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2022-08-28 | M15 Celje 1 | F | clay | Roko Horvat | 6-3 3-6 6-1 |
Averages over each player's completed matches in the selected window. ATP, WTA & Challenger.