Stadium: Court 5 Round: 26 Ground: Hardcourt outdoor
| ITF M15 Cancun | 2021/12/08 14:00 | Christian Langmo v Masamichi Imamura | 6-2,6-2 |
| Challenger Puerto Vallarta | 2021/11/24 03:20 | Christian Langmo v Zachary Svajda | 7-5,4-6,5-7 |
| Challenger Puerto Vallarta | 2021/11/22 21:00 | Christian Langmo v Juan Sebastian Gomez | 7-6,6-1 |
| Challenger Puerto Vallarta | 2021/11/21 16:00 | Christian Langmo v Miguel Damas | 6-1,6-1 |
| ITF M25 Austin | 2021/11/18 17:00 | Christian Langmo v Colin Markes | 3-6,6-3,6-7 |
| ITF M25 Austin | 2021/11/16 20:00 | Christian Langmo v Alfredo Perez | 6-2,6-4 |
| ITF M25 Harlingen | 2021/11/13 19:40 | Paul Jubb v Christian Langmo | 7-5,6-1 |
| ITF M25 Harlingen | 2021/11/12 15:50 | Christian Langmo v Toby Alex Kodat | 3-6,7-6,6-4 |
| ITF M15 Cancun | 2021/12/07 16:00 | Dusty H. Boyer v Kristjan Tamm | 4-6,3-6 |
| ITF M15 Cancun | 2021/12/04 14:00 | Rubin Statham v Kristjan Tamm | 6-7,7-6,10-7 |
| ITF M15 Cancun | 2021/11/30 16:00 | Mwendwa Mbithi v Kristjan Tamm | 6-7,6-7 |
| ITF M15 Cancun | 2021/11/23 14:00 | Kristjan Tamm v Daniel Antonio Nunez | 6-4,2-6,6-7 |
| Challenger Helsinki | 2021/11/14 10:20 | Kristjan Tamm v Shintaro Mochizuki | 6-7,3-6 |
| ITF M25 Grasse | 2021/06/15 10:35 | Clement Tabur v Kristjan Tamm | 6-2,7-5 |
| ITF M15 Sarajevo | 2021/06/02 09:00 | Gilbert S K Junior v Kristjan Tamm | 6-4,6-2 |
| ITF M25 Kiseljak | 2021/05/26 14:25 | Rrezart Cungu v Kristjan Tamm | 6-3,6-4 |