| ITF M25 Nottingham | 05/01 14:10 | 54 | Mattias Southcombe v Patrick Foley | 6-1,5-7,10-7 | |
| ITF M25 Nottingham - selejtező | 04/17 12:35 | 54 | Daniil Glinka v Mattias Southcombe | 7-5,6-1 | |
| ITF M25 Nottingham | 04/10 10:55 | 54 | Alexis Canter v Mattias Southcombe | 6-3,7-6 | |
| ITF M15 Sharm El Sheikh | 04/04 09:00 | 62 | Mattias Southcombe v Ali Habib | 5-7,6-3,9-11 | |
| ITF M15 Monastir | 03/24 08:00 | 25 | Mattias Southcombe v Clement Tabur | 1-6,2-6 | |
| ITF M25 Monastir | 03/13 09:00 | 62 | Mattias Southcombe v Tim Sandkaulen | 6-2,3-6,7-10 | |
| ITF M25 Monastir | 03/06 10:30 | 62 | Mattias Southcombe v Thomas Braithwaite | 1-6,5-7 | |
| ITF M25 Glasgow | 02/13 09:30 | 54 | Mattias Southcombe v Scott Duncan | 2-6,6-7 | |
| ITF M25 Shrewsbury | 02/06 11:55 | 54 | Christian Sigsgaard v Mattias Southcombe | 6-3,6-2 | |
| ITF M25 Loughborough | 01/23 15:55 | 54 | Oscar Weightman v Mattias Southcombe | 6-4,6-3 | |
| ITF M25 Bath | 01/10 12:20 | 54 | Mattias Southcombe v Michael Shaw | 4-6,6-4,6-10 | |
| ITF M25 Bath | 01/09 14:30 | 54 | Oscar Weightman v Mattias Southcombe | 5-7,7-5,8-10 | |
| ITF M15 Monastir | 12/06 08:00 | 62 | Luigi Sorrentino v Mattias Southcombe | 6-4,6-0 | |
| ITF M15 Monastir | 12/05 09:00 | 62 | Roman Ruenger v Mattias Southcombe | 3-6,5-7 | |
| ITF M15 Monastir | 11/29 10:30 | 62 | Mattias Southcombe v Antoine Vincent | 4-6,3-6 | |
| ITF M15 Monastir | 11/22 12:30 | 62 | Mattias Southcombe v Edward Winter | 6-7,2-6 | |
| ITF M15 Monastir | 11/22 08:00 | 62 | Nikita Volonski v Mattias Southcombe | 1-6,6-3,7-10 | |
| ITF M15 Monastir | 11/15 08:00 | 62 | Tao Mu v Mattias Southcombe | 6-0,6-2 | |
| ITF M15 Monastir | 11/14 12:30 | 62 | Max Cunat v Mattias Southcombe | 1-6,6-2,6-10 | |
| ITF M15 Sozopol | 10/10 14:30 | 44 | Scott Duncan v Mattias Southcombe | 7-5,6-3 | |
| ITF M15 Monastir | 10/05 09:50 | 25 | Mattias Southcombe v Raphael Collignon | 4-6,2-6 | |
| ITF M15 Monastir | 09/27 08:00 | 62 | Mayeul Darras v Mattias Southcombe | 6-3,6-4 | |
| ITF M15 Monastir | 09/26 10:30 | 62 | Mattias Southcombe v Masood Eisa-Beygi | 6-2,6-3 | |
| ITF M15 Monastir | 09/21 08:00 | 62 | Li Tu v Mattias Southcombe | 4-6,6-3,11-9 | |
| ITF M15 Monastir | 09/20 09:00 | 62 | Mattias Southcombe v Credit Chaiyarin | 6-1,6-4 | |
| ITF M15 Monastir | 09/15 09:30 | 25 | Mattias Southcombe v Omar Brigida | 4-6,7-6,2-6 | |
| ITF M15 Monastir | 09/14 08:00 | 62 | Thanapet Chanta v Mattias Southcombe | 6-7,2-6 | |
| ITF M15 Monastir | 09/13 10:30 | 62 | Tathagat Charantimath v Mattias Southcombe | 2-6,2-6 | |
| ITF M15 Monastir | 09/12 09:00 | 62 | Mattias Southcombe v Alex Knaff | 2-6,7-6,10-7 | |
| ITF M15 Monastir | 08/18 07:30 | 25 | Masamichi Imamura v Mattias Southcombe | 6-3,6-1 |