Erik Crepaldi defeated Alexander Donski 4-6 7-5 6-4 in the M15 Tabarka 8 round of 16 on clay. The upset overturned the form book — Alexander Donski came in leading the head-to-head 1–0. Erik Crepaldi claimed a first win over Alexander Donski in two meetings, narrowing the head-to-head to 1–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2021-05-07 | M15 Monastir 16 | QF | hard | Alexander Donski | 7-6(6) 5-7 6-4 |