C. O'Connell advanced when Nerman Fatic retired 6-7 6-1 4-2 in the M25 Doboj 1 semi-final. C. O'Connell extended the head-to-head to 4–0.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2019-06-02 | M25 Kiseljak 1 | QF | clay | C. O'Connell | 7-6(3) 6-4 |
| 2016-08-12 | Serbia F4 | QF | clay | C. O'Connell | 7-6(1) 6-2 |
| 2016-07-24 | Serbia F1 | F | clay | C. O'Connell | 6-4 6-1 |
Averages over each player's completed matches in the selected window. ATP, WTA & Challenger.
O'Connell C.: 3 days rest · 1 match, 27 games (7d). Higher means fresher. About