| Challenger Ochsenhausen | 2019/12/04 10:10 | Sven Happek v Jon Ander Guerricabeitia | L | 0-3 |
| Challenger Ochsenhausen | 2019/12/04 07:30 | Sven Happek v Dauud Cheaib | L | 0-3 |
| Challenger Ochsenhausen | 2019/11/22 09:30 | Yannick Vostes v Sven Happek | L | 3-1 |
| Challenger Ochsenhausen | 2019/11/21 13:30 | Daniel Kiss v Sven Happek | W | 2-3 |
| Challenger Ochsenhausen | 2019/11/21 10:50 | Fedor Kuzmin v Sven Happek | L | 3-1 |
| Challenger Ochsenhausen | 2019/11/21 08:50 | Miroslav Sklensky v Sven Happek | L | 3-2 |
| Challenger Ochsenhausen | 2019/11/20 13:30 | Carlos Ishida v Sven Happek | L | 3-0 |
| Challenger Ochsenhausen | 2019/11/20 12:10 | Robert Floras v Sven Happek | L | 3-0 |
| Challenger Ochsenhausen | 2019/12/04 10:50 | Nikola Marinkovic v Abhishek Yadav | L | 0-3 |
| Challenger Ochsenhausen | 2019/12/04 08:50 | Nikola Marinkovic v Tomasz Tomaszuk | W | 3-1 |
| Croatia Open | 2019/05/14 14:20 | Alexander Valuch v Nikola Marinkovic | L | 3-0 |
| Croatia Open | 2019/05/14 09:00 | Kenji Matsudaira v Nikola Marinkovic | L | 3-0 |
| Slovenia Open U21 | 2019/05/10 07:40 | Tibor Spanik v Nikola Marinkovic | W | 1-3 |
| Slovenia Open | 2019/05/08 15:40 | Hibiki Tazoe v Nikola Marinkovic | L | 3-2 |
| Challenger Ochsenhausen | 2019/03/05 11:20 | Nikola Marinkovic v Koyo Kanamitsu | L | 1-3 |
| Challenger Ochsenhausen | 2019/03/05 08:00 | Nikola Marinkovic v Francisco Sanchi | L | 0-3 |