Stadium: Court 10 Round: 28 Ground: Hardcourt outdoor
| ITF M15 Edwardsville | 2021/07/24 13:50 | Christian Langmo v Strong Kirchheimer | 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 |
| Challenger Cary | 2021/09/12 15:00 | Thomas Fancutt v Strong Kirchheimer | 6-4,3-6,6-7 |
| ITF M25 Champaign | 2021/07/29 18:45 | Strong Kirchheimer v Dane Sweeny | 0-6,7-5,3-6 |
| ITF M25 Champaign | 2021/07/28 21:10 | William Griffith v Strong Kirchheimer | 6-3,6-7,4-6 |
| ITF M15 Cancun | 2021/09/30 14:30 | Christian Langmo v Seita Watanabe | 6-2,6-4 |
| ITF M15 Cancun | 2021/09/29 15:45 | Christian Langmo v Luis Britto | 6-4,6-4 |
| ITF M15 Cancun | 2021/09/23 21:20 | Leonardo Civita-Telles v Christian Langmo | 6-7,6-3,6-3 |
| ITF M15 Cancun | 2021/09/22 15:55 | Colin Markes v Christian Langmo | 6-7,6-4,2-6 |
| Challenger Quito | 2021/09/14 16:50 | Mario Vilella Martinez v Christian Langmo | 6-3,6-7,6-2 |
| Challenger Quito | 2021/09/13 15:00 | Christian Langmo v Jorge Ruiz | 6-2,6-2 |
| ITF M25 Sintra | 2021/09/08 09:00 | Christian Langmo v Shintaro Imai | 5-7,6-2,6-7 |
| ITF M25 Sierre | 2021/08/31 12:20 | Christian Langmo v Valentin Vacherot | 6-7,4-6 |