Stadium: Stadium 2 Round: 27 Ground: Hardcourt outdoor
| Challenger Lexington MD | 2021/07/27 22:05 | Cid Subervi/Wu v Ito T / Sekiguchi S | 6-3,6-3 |
| Challenger Lexington MD | 2021/07/28 22:00 | Prashanth N V S / Ramanathan R v Harrison C / Novikov D | 6-4,3-6,5-10 |
| Challenger Cary MD | 2021/07/24 18:00 | Harrison C / Novikov D v Chrysochos, Petros / Pervolarakis, Michail | 6-3,6-3 |
| Challenger Cary MD | 2021/07/23 22:45 | Harrison C / Novikov D v Lacko/Ramanathan | 7-5,6-3 |
| Challenger Cary MD | 2021/07/22 21:30 | Harrison C / Novikov D v Blanch U / Riffice S | 6-3,7-5 |
| Challenger Orlando MD | 2021/04/17 19:10 | Harrison C / Novikov D v Krueger/Sock | 6-4,5-7,11-13 |
| Challenger Orlando MD | 2021/04/16 18:55 | Harrison C / Novikov D v Aragone J / Martinez L D | 6-2,6-3 |
| Challenger Orlando MD | 2021/04/14 14:00 | Reyes-Varela M A / Romboli F v Harrison C / Novikov D | 2-6,7-5,6-10 |
| Challenger Orlando MD | 2021/04/14 14:00 | A.R. Varela/Romboli v Harrison C / Novikov D | 2-6,7-5,0-1 |