| Challenger Salinas 2 | 2021/04/27 18:00 | Agustin Velotti v Roberto Cid Subervi | 5-7,6-4,7-6 |
| Challenger Tallahassee | 2021/04/20 14:00 | Roberto Cid Subervi v Joao Menezes | 5-7,4-6 |
| Challenger Orlando | 2021/04/17 16:50 | Denis Kudla v Roberto Cid Subervi | 2-6,6-2,6-2 |
| Challenger Orlando | 2021/04/14 15:50 | Thiago Seyboth Wild v Roberto Cid Subervi | 6-7,2-6 |
| Challenger Orlando | 2021/04/13 14:00 | Mikael Torpegaard v Roberto Cid Subervi | 6-7,3-6 |
| UTR Pro Tennis Series Atlanta | 2021/04/11 13:30 | Roberto Cid Subervi v Gavin Young | 6-7,7-6,5-1 |
| UTR Pro Tennis Series Atlanta | 2021/04/10 12:30 | Roberto Cid Subervi v Ryan Shane | 6-3,3-6,5-3 |
| UTR Pro Tennis Series Atlanta | 2021/04/08 15:30 | Roberto Cid Subervi v Luis G Monio | 6-1,6-0 |