| ITF M15 Tianjin | 07/02 07:30 | 62 | Zhou Mingzhou v Mattias Southcombe | 0-6,0-6 | |
| ITF M15 Tianjin | 06/26 06:00 | 62 | Mattias Southcombe v He Ziheng | 6-4,6-7,8-10 | |
| ITF M15 Tianjin | 06/25 06:00 | 62 | Mattias Southcombe v Yu Zhang | 7-5,7-6 | |
| ITF M15 Tianjin | 06/19 03:30 | 62 | Mattias Southcombe v Yanjie Zheng | 6-3,7-5 | |
| ITF M15 Tianjin | 06/18 02:00 | 62 | Mattias Southcombe v Xiaoyu He | 6-2,6-3 | |
| ITF M15 Tianjin | 06/14 06:10 | 25 | Hanyi Liu v Mattias Southcombe | 6-4,6-1 | |
| ITF M15 Tianjin | 06/13 02:00 | 62 | Mattias Southcombe v Zijiang Yang | 6-3,3-6,10-8 | |
| ITF M15 Addis Ababa | 05/23 13:30 | 25 | Benjamin Lock v Mattias Southcombe | 6-1,6-0 | |
| ITF M15 Addis Ababa - selejtezők | 05/22 10:50 | 54 | Mattias Southcombe v Benjamin I T Fernandez | 7-5,6-3 | |
| ITF M15 Addis Ababa - selejtezők | 05/22 06:55 | 54 | Mattias Southcombe v Tushar Madan | 6-2,6-3 | |
| ITF M15 Addis Ababa | 05/15 08:00 | 54 | Mattias Southcombe v Guelfo Baldovinetti | 5-7,6-7 | |
| ITF M15 Addis Ababa | 05/14 07:00 | 54 | Mattias Southcombe v Joe Cooper | 6-1,6-2 | |
| ITF M25 Kursumlijska Banja | 05/08 07:00 | 62 | Romeo Hadzimehmedovic v Mattias Southcombe | 6-4,6-3 | |
| ITF M15 Monastir | 04/23 10:00 | 62 | Youssef Labbene v Mattias Southcombe | 6-2,6-2 | |
| ITF M15 Monastir | 04/16 08:00 | 62 | Yannik Steinegger v Mattias Southcombe | 6-1,6-2 | |
| UTR Pro Easton | 04/08 08:00 | - | Luke Simkiss v Mattias Southcombe | 6-3,6-7,4-6 | |
| UTR Pro Easton | 04/07 08:30 | - | Mattias Southcombe v Sahej Maker | 6-3,6-2 | |
| UTR Pro Easton | 04/06 11:30 | - | Ivan Denisov v Mattias Southcombe | 6-3,5-4 | |
| UTR Pro Easton | 04/05 08:30 | - | Kyle Rae v Mattias Southcombe | 6-2,6-3 | |
| UTR Pro Easton | 04/04 10:00 | - | Axel Bergdahl v Mattias Southcombe | 7-6,6-4 | |
| UTR Pro Easton | 04/02 10:30 | - | Louis Bowden v Mattias Southcombe | 6-3,5-3 | |
| ITF M25 Sunderland | 01/22 16:00 | 54 | Damian Rodriguez v Mattias Southcombe | 6-3,6-0 | |
| ITF M25 Sheffield | 01/16 11:15 | 54 | Tristan McCormick v Mattias Southcombe | 4-6,6-3,10-8 | |
| ITF M25 Sheffield | 01/15 13:20 | 54 | Mattias Southcombe v Matthew Summers | 6-3,6-3 | |
| UK Pro League | 11/07 14:00 | 1 | Anton Matusevich v Mattias Southcombe | 6-3,6-2 | |
| ITF M25 Jerusalem | 11/02 13:00 | 25 | Louis Wessels v Mattias Southcombe | 6-7,6-3,7-5 | |
| ITF M15 Maputo | 10/11 07:30 | 25 | Mattias Southcombe v Guy Orly Iradukunda | 6-1,2-6,3-6 | |
| ITF M15 Maputo | 10/04 07:30 | 25 | Mattias Southcombe v Denis Constantin Spiridon | 3-6,4-6 | |
| UK Pro League | 09/25 10:00 | - | Arthur Fery v Mattias Southcombe | View | |
| ITF M25 Budapest | 09/05 09:30 | 54 | Mattias Southcombe v Leyton Rivera | 4-6,4-6 |