| UTR Pro Tennis Series - New York | 2021/12/29 19:00 | Harris Walker v Ethan Leon | 0-1 |
| UTR Pro Tennis Series - New York | 2021/12/28 19:00 | Harris Walker v Michael Zheng | 6-4,7-5 |
| UTR Pro Tennis Series - New York | 2021/12/27 17:30 | Harris Walker v Sachin Palta | 7-6,6-1 |
| UTR Pro Tennis Series Atlanta | 2021/04/18 12:30 | Harris Walker v Matthew Segura | 6-7,6-1,4-1 |
| UTR Pro Tennis Series Atlanta | 2021/04/17 14:00 | Harris Walker v Peter Bertran | 6-1,0-0 |
| UTR Pro Tennis Series Atlanta | 2021/04/16 15:00 | Daniel Milavsky v Harris Walker | 2-6,4-6 |
| UTR Pro Tennis Series Atlanta | 2021/04/15 17:00 | Nicolas Meister v Harris Walker | 1-6,2-6 |
| UTR Pro Tennis Series Atlanta | 2021/04/14 14:30 | Jacob Brumm v Harris Walker | 2-6,2-6 |
| UTR Pro Tennis Series - New York | 2021/12/29 17:30 | Sachin Palta v Alex Finkelstein | 0-6,3-6 |
| UTR Pro Tennis Series - New York | 2021/12/27 18:50 | Michael Zheng v Alex Finkelstein | 6-4,6-3 |