| Flórida - UTR Pro Tennis Series | 2021/03/13 15:30 | Harris Walker v Matthew Segura | 6-3,6-3 |
| Flórida - UTR Pro Tennis Series | 2021/03/12 18:30 | Harris Walker v Raphael Termat | 7-6,6-3 |
| Flórida - UTR Pro Tennis Series | 2021/03/11 17:50 | Harris Walker v Michael Zheng | 4-6,6-7 |
| Flórida - UTR Pro Tennis Series | 2021/03/10 16:00 | Connor Krug v Harris Walker | 0-6,3-6 |
| Flórida - UTR Pro Tennis Series | 2021/03/09 15:30 | Sekou Bangoura v Harris Walker | 6-2,2-6,6-3 |
| ITF - M25 Naples | 2021/02/23 16:40 | Harris Walker v Christian Langmo | 3-6,3-6 |
| Flórida - UTR Pro Tennis Series | 2021/01/19 18:30 | Strong Kirchheimer v Harris Walker | 7-6,6-3 |
| Flórida - UTR Pro Tennis Series | 2021/01/18 14:00 | Harris Walker v Giulio Perego | 6-4,6-2 |
| Flórida - UTR Pro Tennis Series | 2021/03/13 14:00 | Joshua Sheehy v Giulio Perego | 6-2,5-4 |
| Flórida - UTR Pro Tennis Series | 2021/03/12 17:00 | Joshua Sheehy v Murphy Cassone | 6-2,6-2 |
| Flórida - UTR Pro Tennis Series | 2021/03/10 18:00 | Joshua Sheehy v Kiranpal Pannu | 6-4,3-6,2-6 |
| Flórida - UTR Pro Tennis Series | 2021/03/09 18:30 | Joshua Sheehy v Benjamin Dhoe | 4-6,5-7 |
| Flórida - UTR Pro Tennis Series | 2021/03/08 18:30 | Charles Sullivan v Joshua Sheehy | 7-6,3-6,6-6 |
| Califórnia - UTR Pro Tennis Series | 2021/02/28 17:30 | Colton Smith v Joshua Sheehy | 6-4,6-4 |
| Califórnia - UTR Pro Tennis Series | 2021/02/27 20:30 | Joshua Sheehy v Dusty H. Boyer | 7-6,0-0 |
| Califórnia - UTR Pro Tennis Series | 2021/02/26 20:00 | Joshua Sheehy v Nicolas Barrientos | 5-7,4-5 |