Lucas Obeid defeated Valentin Manuel Greco 6-4 6-2 in the M15 Quito 3 q64 on clay. The upset overturned the form book — Valentin Manuel Greco came in leading the head-to-head 1–0, but Lucas Obeid had been the form player, winning 4 of their last 10 on clay. Lucas Obeid claimed a first win over Valentin Manuel Greco in two meetings, narrowing the head-to-head to 1–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2021-12-05 | M25 Rio Cuarto 1 | Q64 | clay | Valentin Manuel Greco | 7-5 6-2 |