Stadium: Court 5 Round: 25 Ground: Hardcourt indoor
| UTR Pro Tennis Series Dallas | 2021/08/08 15:30 | Evan Zhu v Mostardi, Nico | 6-4,5-0 |
| UTR Pro Tennis Series Dallas | 2021/08/07 13:00 | Demulling, Wyatt v Mostardi, Nico | 5-7,5-6 |
| UTR Pro Tennis Series Dallas | 2021/08/05 14:30 | Mostardi, Nico v Acevedo, Nicolas | 2-6,2-6 |
| UTR Pro Tennis Series Dallas | 2021/08/04 14:30 | Mostardi, Nico v Top Nidunjianzan | 7-6,3-6,6-1 |
| UTR Pro Tennis Series Dallas | 2021/08/03 14:30 | Mostardi, Nico v Latinovic, Stefan | 6-2,3-6,1-6 |
| UTR Pro Tennis Series Dallas | 2021/08/02 15:00 | Mostardi, Nico v Kyle Frankel | 4-6,4-5 |
| UTR Pro Tennis Series Atlanta | 2021/07/07 15:30 | Mostardi, Nico v Conner Huertas Del Pino | 6-4,3-6,0-5 |
| UTR Pro Tennis Series Atlanta | 2021/07/06 12:00 | Mostardi, Nico v Nicholas McKinney | 1-6,6-3,3-6 |
| ITF M15 Lubbock | 2021/10/01 16:30 | Cannon Kingsley v Charles Broom | 1-6,6-3,6-4 |
| ITF M15 Lubbock | 2021/09/30 15:00 | Shane, Ryan v Charles Broom | 6-7,3-6 |
| ITF M15 Lubbock | 2021/09/29 15:00 | Charles Broom v Bangoura, Sekou | 7-6,6-7,6-4 |
| Fayetteville, AR, Singles Qualifying, M-ITF-USA-31 | 2021/09/21 14:00 | Charles Broom v Ross, Gianni | 3-6,3-6 |
| UK Pro League | 2021/08/29 13:00 | Billy Harris v Charles Broom | 6-3,3-6,10-2 |
| UK Pro League | 2021/08/28 13:00 | Patten, Henry v Charles Broom | 4-6,7-6,8-10 |
| UK Pro League | 2021/08/26 13:00 | Charles Broom v Paris, Joshua | 7-6,7-5 |
| UK Pro League | 2021/08/25 14:30 | Charles Broom v Adam Jones | 6-3,6-2 |