Stadium: Stadium 2 Round: 28 Ground: Hardcourt outdoor
| Challenger Lexington MD | 2021/07/29 22:30 | Cid Subervi/Wu v Harrison C / Novikov D | 5-7,3-6 |
| 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 Lexington MD | 2021/07/29 22:55 | Dostanic/Nanda v Rybakov A / Stalder R | 3-6,6-4,9-11 |
| Challenger Lexington MD | 2021/07/27 23:30 | Rybakov A / Stalder R v Balaji/Margaroli | 7-6,6-4 |
| ITF USA F21 MD | 2017/06/28 19:55 | Krajicek A / Withrow J v Rybakov A / Stalder R | 6-4,6-2 |
| ITF USA F21 MD | 2017/06/27 19:15 | Rybakov A / Stalder R v Gozun A / Stillman T | 6-7,7-5,10-7 |