Stadium: Court 5 Round: 26 Ground: Hardcourt indoor
| ITF M15 East Lansing | 2021/11/16 18:00 | Jeffrey Von Der Schulenburg v Gabriel Diallo | 1-6,2-6 |
| Challenger Lexington | 2021/07/25 15:00 | Darian King v Gabriel Diallo | 6-2,3-6,6-3 |
| ITF M15 Champaign | 2021/06/27 15:00 | Jason Kubler v Gabriel Diallo | 6-2,6-1 |
| ITF M15 Champaign | 2021/06/26 15:00 | Gabriel Diallo v Kyle Seelig | 6-4,6-3 |
| ITF M15 Champaign | 2021/06/25 17:00 | Gabriel Diallo v Khololwam Montsi | 7-5,6-3 |
| ITF M15 Champaign | 2021/06/24 15:00 | Genaro Alberto Olivieri v Gabriel Diallo | 3-6,6-7 |
| ITF M15 Champaign | 2021/06/23 19:05 | Benjamin Sigouin v Gabriel Diallo | 3-6,2-6 |
| ITF M15 Champaign | 2021/06/22 15:00 | Peter Bertran v Gabriel Diallo | 1-6,0-6 |
| ITF M15 East Lansing | 2021/11/17 22:20 | Max Sheldon v Andres Andrade | 5-7,6-0,2-6 |
| ITF M15 East Lansing | 2021/11/16 16:00 | Radu Mihai Papoe v Andres Andrade | 5-7,3-6 |
| ITF M15 Tallahassee | 2021/10/28 13:55 | Matias Franco Descotte v Andres Andrade | 6-4,6-3 |
| ITF M15 Tallahassee | 2021/10/27 16:30 | Andres Andrade v Abedallah Shelbayh | 6-1,6-2 |
| ITF M15 Tallahassee | 2021/10/26 13:00 | Joshua Peck v Andres Andrade | 1-6,0-6 |
| ITF M15 Tallahassee | 2021/10/25 13:00 | Joshua D Karpenschif v Andres Andrade | 3-6,1-6 |
| ITF M15 Vero Beach | 2021/10/20 23:30 | Andres Andrade v Juan Ignacio Galarza | 1-6,7-5,4-6 |
| ITF M25 Vero Beach | 2021/10/19 16:00 | Yang Liu v Andres Andrade | 0-6,4-6 |