Stadium: Court 1 Round: 44 Ground: Carpet indoor
| ITF - M25 Nussloch | 2020/01/19 09:00 | Mansson, Marcus v Solanki, Alex | 6-4,4-6,10-8 |
| Sarreguemines, Singles M-ITF-FRA-22A | 2019/11/17 09:55 | Yannik Steinegger v Mansson, Marcus | 6-3,6-4 |
| ITF M15 Parnu | 2019/10/29 08:00 | Hietaranta, Roni Mikael v Mansson, Marcus | 2-6,7-6,10-4 |
| ITF M15 Parnu | 2019/10/28 10:30 | Mansson, Marcus v Gurevich, Victor | 6-4,7-5 |
| Ystad, Singles M-ITF-SWE-03A | 2019/08/05 11:35 | Nokic, Almir v Mansson, Marcus | 6-1,6-4 |
| ITF - M15 Poitiers | 2019/03/11 08:30 | Mansson, Marcus v Joffrey De Schepper | 1-6,3-6 |
| Oslo, Singles M-ITF-NOR-01A | 2019/03/06 09:00 | Stevens, Bart v Mansson, Marcus | 7-6,7-6 |
| Oslo, Singles M-ITF-NOR-01A | 2019/03/05 09:00 | Mansson, Marcus v Alexey Aleshchev | 6-3,1-6,10-7 |
| ITF - M25 Nussloch | 2020/01/19 09:00 | Schommer, Fred Olivier v Zielinski, Jan | 2-6,2-6 |
| ITF - M15 Héraklion | 2019/11/17 08:30 | Erler, Alexander v Zielinski, Jan | 7-5,6-1 |
| ITF - M15 Héraklion | 2019/11/16 12:00 | Zielinski, Jan v Patrick Kypson | 6-4,6-2 |
| ITF - M15 Héraklion | 2019/11/16 08:00 | Zielinski, Jan v Jonas Trinker | 6-3,6-2 |
| ITF - M15 Héraklion | 2019/11/15 08:00 | Zielinski, Jan v Kirkov, Vasil | 6-3,6-3 |
| ITF - M15 Héraklion | 2019/11/12 13:05 | Kocevar-Desman, Tom v Zielinski, Jan | 1-6,4-6 |
| ITF - M15 Sharm El Sheikh | 2019/10/30 11:25 | Zielinski, Jan v Kacper Zuk | 3-6,3-6 |
| ITF - M15 Sharm El Sheikh | 2019/10/23 08:00 | Karim-Mohamed Maamoun v Zielinski, Jan | 7-5,6-2 |