Stadium: Court 4 Oberhaching Round: 44 Ground: Hardcourt indoor
| ITF Germany F8 Qual | 2018/07/15 14:00 | Karlo Cubelic v Marcus Mansson | 6-2,7-6 |
| ITF M15 Sarreguemines | 2019/11/17 09:55 | Yannik Steinegger v Marcus Mansson | 6-3,6-4 |
| ITF M15 Parnu | 2019/10/29 08:00 | Roni Mikael Hietaranta v Marcus Mansson | 2-6,7-6,10-4 |
| ITF M15 Parnu | 2019/10/28 10:30 | Marcus Mansson v Victor Gurevich | 6-4,7-5 |
| ITF M15 Ystad | 2019/08/05 11:35 | Almir Nokic v Marcus Mansson | 6-1,6-4 |
| ITF M15 Poitiers | 2019/03/11 08:30 | Marcus Mansson v Joffrey De Schepper | 1-6,3-6 |
| ITF M15 Oslo | 2019/03/06 09:00 | Bart Stevens v Marcus Mansson | 7-6,7-6 |
| ITF M15 Oslo | 2019/03/05 09:00 | Marcus Mansson v Alexey Aleshchev | 6-3,1-6,10-7 |
| ITF M15 Oslo | 2019/03/04 09:00 | Karl Kiur Saar v Marcus Mansson | 6-7,6-4,9-11 |
| ITF M15 Cancun | 2019/11/21 17:10 | Karlo Cubelic v Gage Brymer | 2-6,2-6 |
| ITF M15 Cancun | 2019/11/20 17:40 | Karlo Cubelic v Bruno Stefani Figlio | 6-3,6-1 |
| ITF M15 Cancun | 2019/11/19 14:00 | Alex Hernandez v Karlo Cubelic | 3-6,6-2,1-10 |
| ITF M15 Cancun | 2019/11/18 13:45 | Camilo A Alvarez Vergara v Karlo Cubelic | 0-6,0-6 |
| ITF M15 Cancun | 2019/11/17 15:30 | Lance A L Castelan v Karlo Cubelic | 0-6,0-6 |
| ITF M15 Cancun | 2019/11/15 21:10 | Karlo Cubelic v Arklon H D Pino | 4-6,0-6 |
| ITF M15 Cancun | 2019/11/14 19:25 | Karlo Cubelic v Gabriel Ciro Da Silva | 6-4,7-5 |
| ITF M15 Cancun | 2019/11/12 14:00 | Karlo Cubelic v Laurin Aerne | 6-2,6-0 |