Samir Hamza Reguig defeated Boris Butulija 6-3 4-6 6-4 in the M15 Monastir 28 round of 16 on hard. Samir Hamza Reguig claimed a first win over Boris Butulija in three meetings, narrowing the head-to-head to 2–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2023-07-21 | M15 Monastir 29 | QF | hard | Boris Butulija | 6-2 7-6(4) |
| 2023-06-14 | M15 Tehran 2 | R32 | clay | Boris Butulija | 7-5 6-3 |
Averages over each player's completed matches in the selected window. ATP, WTA & Challenger.