Stadium: Court 5 Round: 26 Ground: Hardcourt indoor
| Challenger - Little Rock - Herredouble | 2021/06/04 02:25 | Krueger/Sock v Kirchheimer/Kypson | 7-6,6-2 |
| Challenger - Orlando - Herredouble | 2021/04/17 19:10 | Harrison/Novikov v Krueger/Sock | 6-4,5-7,11-13 |
| Challenger - Orlando - Herredouble | 2021/04/16 19:05 | Krueger/Sock v Bangoura/Ore | 6-4,6-3 |
| Challenger - Orlando - Herredouble | 2021/04/15 18:45 | Krueger/Sock v Ritschard/Rybakov | 6-3,6-3 |
| Challenger - Orlando - Herredouble | 2021/04/14 17:15 | Krueger/Sock v Pavic/Roelofse | 7-6,6-3 |
| Challenger - Knoxville - Herredouble | 2021/11/11 18:00 | Gonzales/Rungkat v Blumberg/Schnur | 6-4,7-6 |
| Challenger - Knoxville - Herredouble | 2021/11/10 16:00 | Blumberg/Schnur v Huey/Nielsen | 7-6,6-2 |
| Challenger - Charlottesville - Herredouble | 2021/11/06 16:00 | Blumberg/Schnur v Huey/Nielsen | 3-6,6-1,14-12 |
| Challenger - Charlottesville - Herredouble | 2021/11/05 17:00 | Blumberg/Schnur v Galloway/Lawson | 6-4,6-1 |
| Challenger - Charlottesville - Herredouble | 2021/11/04 21:55 | Lammons/Withrow v Blumberg/Schnur | 3-6,6-7 |
| Challenger - Charlottesville - Herredouble | 2021/11/04 00:00 | Krueger/Rola v Blumberg/Schnur | 3-6,2-6 |
| Challenger - Las Vegas - Herredouble | 2021/10/30 18:00 | Blumberg/Schnur v Jung/King | 7-5,6-7,10-5 |
| Challenger - Las Vegas - Herredouble | 2021/10/29 21:55 | Lammons/Withrow v Blumberg/Schnur | 2-6,4-6 |