Petar Jovanovic defeated Marko Stakusic 6-1 6-3 in the M15 Sarajevo 1 round of 16 on clay. The result followed the form book — Petar Jovanovic came in leading the head-to-head 1–0. Petar Jovanovic extended the head-to-head to 2–0.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2021-08-01 | M15 Novi Sad 2 | Q64 | clay | Petar Jovanovic | 7-5 6-3 |
Averages over each player's completed matches in the selected window. ATP, WTA & Challenger.