Stadium: Court 5 Round: 26 Ground: Hardcourt outdoor
| ITF M25 Harlingen | 2021/11/10 18:10 | Strong Kirchheimer v Keenan Mayo | 6-0,6-4 |
| ITF M15 Fayetteville | 2021/11/03 16:30 | Strong Kirchheimer v Nicolas Rousset | 5-7,4-6 |
| ITF M25 Calabasas | 2021/10/27 18:55 | Austin Ansari v Strong Kirchheimer | 6-1,4-6,6-3 |
| 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 M25 Harlingen | 2021/11/10 19:00 | Mark Whitehouse v Yuta Kikuchi | 3-6,0-6 |
| ITF M15 Monastir | 2021/05/27 08:30 | Yuta Kikuchi v Yunseong Chung | 2-6,6-3,1-6 |
| ITF M15 Monastir | 2021/05/26 09:30 | Omni Kumar v Yuta Kikuchi | 6-3,5-7,4-6 |
| ITF M15 Monastir | 2021/05/24 13:30 | Yuta Kikuchi v Perry Gregg | 6-3,6-1 |
| ITF M15 Monastir | 2021/05/24 09:00 | Yuta Kikuchi v Lisandru Rodriguez | 6-0,5-7,10-5 |
| ITF M15 Monastir | 2021/05/19 08:25 | Yuta Kikuchi v Michail Pervolarakis | 4-6,6-7 |
| ITF M15 Monastir | 2021/05/17 13:30 | Yuta Kikuchi v Perry Gregg | 6-2,6-3 |
| ITF M15 Monastir | 2021/05/17 09:00 | Yuta Kikuchi v Antoine Monaco | 6-3,6-2 |