Stadium: Court 1 Round: 25 Ground: Hardcourt outdoor
| ITF M25 East Lansing | 2022/06/06 13:30 | Ying-Ze Chen v Alexander Richards | 6-3,6-4 |
| ITF M15 Lubbock | 2021/09/27 15:00 | Alexander Richards v Sven Lah | 0-6,0-6 |
| UTR Pro Tennis Series Manzanillo | 2021/08/10 16:00 | Alexander Richards v Luciano Doria | 4-6,1-4 |
| UTR Pro Tennis Series Manzanillo | 2021/08/09 13:00 | Alexander Richards v Guillermo Castaneda | 5-7,7-6,2-6 |
| UTR Pro Tennis Series Manzanillo | 2021/08/03 14:30 | Alexander Richards v Alonso A Delgado | 6-1,4-6,2-6 |
| ITF M15 Edwardsville | 2021/07/19 15:00 | William Griffith v Alexander Richards | 6-1,6-1 |
| ITF M25 Wichita | 2021/06/08 16:55 | David Fox v Alexander Richards | 6-3,7-5 |
| ITF M25 Wichita | 2021/06/07 15:00 | Alexander Richards v Finn Bass | 6-4,6-4 |
| US Open | 2021/08/30 19:10 | Grigor Dimitrov v Sam Riffice | 6-1,7-6,6-3 |
| Challenger Lexington | 2021/07/25 20:30 | Stefan Kozlov v Sam Riffice | 6-2,6-3 |
| Challenger Cary | 2021/07/22 18:00 | Sam Riffice v Prajnesh Gunneswaran | 2-6,4-6 |
| Challenger Cary | 2021/07/20 15:00 | Sam Riffice v Tatsuma Ito | 6-7,6-4,7-5 |
| ITF M25 Tulsa | 2021/06/19 14:00 | Genaro Alberto Olivieri v Sam Riffice | 7-6,7-6 |
| ITF M25 Tulsa | 2021/06/18 14:00 | Gage Brymer v Sam Riffice | 0-6,6-7 |
| ITF M25 Tulsa | 2021/06/17 14:00 | Sam Riffice v Jason Kubler | 6-1,6-4 |
| ITF M25 Tulsa | 2021/06/16 14:00 | Nathan Ponwith v Sam Riffice | 5-7,4-6 |