Marko Tepavac defeated Ljubomir Celebic 6-3 6-3 in the M25 Kiseljak 1 round of 32 on clay. The upset overturned the form book — Ljubomir Celebic came in leading the head-to-head 2–1. Marko Tepavac narrowed the head-to-head to 2–2.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2020-03-04 | M15 Heraklion 4 | R32 | hard | Ljubomir Celebic | 5-0 |
| 2020-02-26 | M15 Heraklion 3 | R32 | hard | Ljubomir Celebic | 3-0 |
| 2014-07-14 | Serbia F5 | R16 | clay | Marko Tepavac | 7-5 6-1 |
Averages over each player's completed matches in the selected window. ATP, WTA & Challenger.