Benjamin Lock defeated Alexander Donski 6-7 6-3 7-6 in the M15 Johannesburg 1 final on hard. The upset overturned the form book — Alexander Donski came in leading the head-to-head 1–0. Benjamin Lock claimed a first win over Alexander Donski in two meetings, narrowing the head-to-head to 1–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2019-10-05 | M15 Pretoria 1 | SF | hard | Alexander Donski | 6-3 6-7(4) 6-4 |
Averages over each player's completed matches in the selected window. ATP, WTA & Challenger.