| UTR Pro Tennis Series Florida | 2021/03/10 16:00 | Connor Krug v Harris Walker | 0-6,3-6 |
| UTR Pro Tennis Series Florida | 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 |
| UTR Pro Tennis Series Florida | 2021/01/19 18:30 | Strong Kirchheimer v Harris Walker | 7-6,6-3 |
| UTR Pro Tennis Series Florida | 2021/01/18 14:00 | Harris Walker v Giulio Perego | 6-4,6-2 |
| UTR Pro Tennis Series Florida | 2021/01/17 16:00 | Harris Walker v Noah Rubin | 4-6,2-6 |
| UTR Pro Tennis Series Florida | 2021/01/16 17:15 | Stefan Kozlov v Harris Walker | 0-6,2-6 |
| UTR Pro Tennis Series Florida | 2021/01/15 14:00 | Harris Walker v Bruno Kuzuhara | 6-4,6-2 |
| UTR Pro Tennis Series Florida | 2021/03/09 15:30 | Connor Krug v Michael Zheng | 6-4,3-6,5-2 |
| UTR Pro Tennis Series Florida | 2021/03/08 14:00 | Michael Zheng v Raphael Termat | 6-2,5-2 |