Stadium: Court 16 Round: 14 Ground: Hardcourt outdoor
| Challenger San Marino | 2021/08/11 20:05 | Roberto Marcora v Pavel Kotov | 4-6,4-6 |
| Challenger San Marino | 2021/08/10 11:00 | Roberto Marcora v Andrea Pellegrino | 7-6,7-6 |
| Challenger Cordenons | 2021/08/03 08:30 | Marc-Andrea Huesler v Roberto Marcora | 6-4,6-4 |
| Challenger Poznan | 2021/07/28 10:35 | Roberto Marcora v Dmitry Popko | 0-6,3-6 |
| Challenger Poznan | 2021/07/27 10:05 | Maxime Janvier v Roberto Marcora | 3-6,2-6 |
| ATP Gstaad | 2021/07/18 11:05 | Oscar Otte v Roberto Marcora | 6-4,6-3 |
| ATP Gstaad | 2021/07/17 14:30 | Gonzalo Escobar v Roberto Marcora | 6-1,4-6,6-7 |
| ATP Bastad | 2021/07/11 09:00 | Roberto Marcora v Marc-Andrea Huesler | 6-3,4-6,3-6 |
| Challenger Luedenscheid | 2021/08/17 13:25 | Robin Haase v Roberto Cid Subervi | 6-3,6-1 |
| Challenger Meerbusch | 2021/08/10 08:30 | Roberto Cid Subervi v Botic Van De Zandschulp | 6-3,4-6,6-7 |
| Challenger Lexington | 2021/07/28 22:30 | Ernesto Escobedo v Roberto Cid Subervi | 6-4,7-6 |
| Challenger Lexington | 2021/07/26 21:00 | Roberto Cid Subervi v Mikael Torpegaard | 3-6,6-4,6-2 |
| Challenger Cary | 2021/07/22 17:00 | Genaro Alberto Olivieri v Roberto Cid Subervi | 7-6,6-0 |
| Challenger Cary | 2021/07/20 15:00 | Roberto Cid Subervi v Gonzalo Villanueva | 3-6,7-5,6-1 |
| UTR Pro Tennis Series Atlanta | 2021/07/16 14:00 | Roberto Cid Subervi v Ishaan Ravichander | 1-6,6-1,2-6 |
| UTR Pro Tennis Series Atlanta | 2021/07/15 13:30 | James Hopper v Roberto Cid Subervi | 1-6,1-6 |