Luigi Castelletti defeated Erwin Troebinger 6-2 6-2 in the M25 Santa Margherita di Pula 2 q32 on clay. The result followed the form book — Luigi Castelletti came in leading the head-to-head 1–0. Luigi Castelletti extended the head-to-head to 2–0.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2021-02-21 | M15 Monastir 6 | Q64 | hard | Luigi Castelletti | 7-6(5) 6-2 |