Matthew Dellavedova defeated Dusan Rajic 6-2 6-3 in the M15 Ulcinj 1 round of 32 on clay. The upset overturned the form book — Dusan Rajic came in leading the head-to-head 1–0. Matthew Dellavedova claimed a first win over Dusan Rajic in two meetings, narrowing the head-to-head to 1–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2021-09-06 | M15 Ulcinj 2 | Q16 | clay | Dusan Rajic | 6-2 7-5 |
Averages over each player's completed matches in the selected window. ATP, WTA & Challenger.