Adrian Boitan defeated Calin Manda 6-1 6-4 in the M15 Cluj Napoca 1 round of 16 on clay. The upset overturned the form book — Calin Manda came in leading the head-to-head 1–0, but Adrian Boitan had been the form player, winning 5 of their last 6 on clay. Adrian Boitan claimed a first win over Calin Manda in two meetings, narrowing the head-to-head to 1–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2021-08-12 | M15 Curtea de Arges 1 | R16 | clay | Calin Manda | 6-3 6-2 |