| Challenger Ilkley | 06/18 13:20 | 24 | [285] Jan Choinski v Brydan Klein [355] | 6-2,5-7,2-6 | |
| Challenger Ilkley | 06/17 11:00 | 166 | [211] Evgeny Karlovskiy v Brydan Klein [355] | 6-4,1-6,2-6 | |
| Challenger Nottingham | 06/11 14:40 | 24 | Ryan Peniston v Brydan Klein | 4-6,6-4,6-4 | |
| Challenger Nottingham | 06/10 13:35 | 166 | [354] Brydan Klein v Lloyd Glasspool [476] | 7-6,6-2 | |
| Challenger Surbiton | 06/05 11:50 | 25 | [359] Brydan Klein v Brayden Schnur [106] | 3-6,3-6 | |
| Challenger Surbiton | 06/03 14:10 | 24 | [216] Andrew Harris v Brydan Klein [359] | 6-2,3-6,4-6 | |
| Challenger Surbiton | 06/03 10:00 | 166 | Brydan Klein v Andrew Watson | 6-3,2-6,5-7 | |
| Challenger Jerusalem | 05/22 09:00 | 25 | [361] Brydan Klein v Filip Peliwo [302] | Retired | |
| Challenger Jerusalem | 05/20 11:05 | 24 | [439] Sergey Fomin v Brydan Klein [361] | 1-6,6-7 | |
| Challenger Samarkand | 05/13 05:00 | 24 | [391] Viktor Durasovic v Brydan Klein [362] | 6-4,3-6,6-3 | |
| Challenger Rome | 05/06 11:40 | 24 | [361] Brydan Klein v Juan Pablo Ficovich [480] | 2-6,2-6 | |
| Challenger Savannah | 04/29 18:25 | 24 | [361] Brydan Klein v Alexander Ritschard [485] | Retired | |
| Challenger Taipei | 04/10 03:45 | 25 | [96] Lloyd Harris v Brydan Klein [370] | 7-6,6-2 | |
| Challenger Taipei | 04/09 02:00 | 24 | [370] Brydan Klein v Cheng-Peng Hsieh [70] | 6-3,7-5 | |
| Challenger Taipei | 04/08 02:00 | 166 | [371] Brydan Klein v Cheng-Peng Hsieh [70] | 6-7,5-7 | |
| ITF M25 Mildura | 03/10 01:00 | 29 | [373] Dayne Kelly v Brydan Klein [380] | 6-1,4-6,6-4 | |
| ITF M25 Mildura | 03/09 01:00 | 28 | [399] Shuichi Sekiguchi v Brydan Klein [380] | 7-6,1-6,1-6 | |
| ITF M25 Mildura | 03/08 02:35 | 27 | Christopher O'Connell v Brydan Klein | 6-3,2-6,3-6 | |
| ITF M25 Mildura | 03/07 01:50 | 26 | Nick Chappell v Brydan Klein | 3-6,2-6 | |
| ITF M25 Mildura | 03/06 01:05 | 25 | Matthew Romios v Brydan Klein | 3-6,2-6 | |
| ITF M25 Albury | 03/03 00:00 | 29 | Brydan Klein v Matthew Romios | 6-1,6-2 | |
| ITF M25 Albury | 03/02 00:00 | 28 | [379] Brydan Klein v Shuichi Sekiguchi [397] | 6-3,6-2 | |
| ITF M25 Albury | 03/01 02:10 | 27 | [379] Brydan Klein v Harry Bourchier [411] | 7-6,6-3 | |
| ITF M25 Albury | 02/28 01:45 | 26 | Brydan Klein v Ryota Tanuma | 6-3,6-2 | |
| ITF M25 Albury | 02/26 02:45 | 25 | Brydan Klein v Matthew Dellavedova | 6-3,6-0 | |
| Challenger Chennai | 02/08 05:30 | 27 | [395] Brydan Klein v Sasi Kumar Mukund [293] | 2-6,6-3,6-7 | |
| Challenger Chennai | 02/07 06:30 | 26 | [240] Soonwoo Kwon v Brydan Klein [395] | 4-6,6-4,3-6 | |
| Challenger Chennai | 02/06 08:55 | 25 | [395] Brydan Klein v Maverick Banes [266] | 6-4,6-1 | |
| Challenger Chennai | 02/05 04:30 | 24 | Manish Sureshkumar v Brydan Klein | 2-6,3-6 | |
| Challenger Canberra | 01/09 02:20 | 26 | [408] Brydan Klein v Bradley Mousley [326] | 4-6,7-6,5-7 |