Stadium: Court 1 Round: 25 Ground: Hardcourt outdoor
| ITF M15 East Lansing | 2019/11/20 17:45 | Strong Kirchheimer v Keenan Mayo | 6-3,6-3 |
| ITF M15 Cancun | 2021/10/13 21:30 | Federico Agustin Gomez v Strong Kirchheimer | 4-6,6-3,2-6 |
| ITF M15 Cancun | 2021/10/06 14:00 | Dali Blanch v Strong Kirchheimer | 6-3,3-6,7-6 |
| ITF M15 Cancun | 2021/10/02 19:50 | Strong Kirchheimer v Christian Langmo | 4-6,4-6 |
| ITF M15 Cancun | 2021/10/01 22:00 | Strong Kirchheimer v Victor Lilov | 6-4,6-1 |
| ITF M15 Cancun | 2021/09/30 21:40 | Strong Kirchheimer v Alexander Bernard | 7-5,4-6,6-3 |
| ITF M15 Cancun | 2021/09/28 17:00 | Strong Kirchheimer v Jose E Yapur | 6-1,6-0 |
| ITF M15 Cancun | 2021/09/22 14:00 | Strong Kirchheimer v Federico Agustin Gomez | 6-7,6-7 |
| Challenger Cary | 2021/09/13 15:00 | Aleksandar Kovacevic v Strong Kirchheimer | 6-3,6-4 |
| UTR Pro Tennis Series Sacramento | 2021/10/04 16:30 | Emon Van Loben Sels v Keenan Mayo | 5-7,7-6,5-6 |
| UTR Pro Tennis Series California | 2021/09/01 18:00 | Keenan Mayo v Ryan Nuno | 6-3,3-0 |
| UTR Pro Tennis Series California | 2021/08/30 18:00 | Keenan Mayo v Aidan Mayo | 3-6,4-5 |
| UTR Pro Tennis Series California | 2021/08/29 19:50 | Maximilian Wild v Keenan Mayo | 6-7,0-5 |
| UTR Pro Tennis Series California | 2021/08/24 21:30 | Keenan Mayo v Warren Wood | 0-6,3-6 |
| UTR Pro Tennis Series California | 2021/08/23 23:15 | Keenan Mayo v Alfredo Perez | 3-6,1-6 |
| UTR Pro Tennis Series California | 2021/08/22 16:30 | Colin Markes v Keenan Mayo | 6-1,0-6,5-4 |
| ITF M15 Monastir | 2021/06/28 13:00 | Perry Gregg v Keenan Mayo | 6-3,6-7,10-6 |