Leonardo Catani defeated Marcel Marlon Sudzum 6-3 6-1 in the M25 Santa Margherita di Pula 5 q32 on clay. The result followed the form book — Leonardo Catani came in leading the head-to-head 1–0. Leonardo Catani extended the head-to-head to 2–0.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2021-08-01 | M15 Frederiksberg 1 | Q32 | clay | Leonardo Catani | 7-6(4) 6-2 |