Stefan Popovic defeated Bor Artnak 1-6 6-3 6-1 in the Zagreb CH qualifying round 1 on clay. The upset overturned the form book — Bor Artnak came in ranked #448, leading the head-to-head 3–0. Stefan Popovic claimed a first win over Bor Artnak in four meetings, narrowing the head-to-head to 3–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2026-08-13 | M25 Kursumlijska Banja 3 | R16 | clay | Bor Artnak | 7-5 6-2 |
| 2023-09-06 | M25 Maribor 2 | R32 | clay | Bor Artnak | 6-3 6-1 |
| 2022-06-12 | M15 Sarajevo 1 | F | clay | Bor Artnak | 6-1 7-5 |
Averages over each player's completed matches in the selected window (77 vs 67). ATP, WTA & Challenger.
Each player's serve crossed against the other's return, converted to expected hold of serve. Recent completed matches, ATP, WTA & Challenger. About