| Challenger - Ochsenhausen | 2017/04/17 18:00 | Jakub Kosowski v Frane Kojic | W | 3-1 |
| Challenger - Ochsenhausen | 2016/12/14 08:41 | Jakub Kosowski v Frane Kojic | L | 0-3 |
| Challenger - Ochsenhausen | 2018/06/04 12:30 | Jakub Kosowski v Petr David | L | 0-3 |
| Challenger - Ochsenhausen | 2018/06/04 09:10 | Jakub Kleprlik v Jakub Kosowski | W | 0-3 |
| Challenger - Ochsenhausen | 2018/06/04 07:10 | Jakub Kosowski v Jakub Folwarski | W | 3-0 |
| Challenger - Ochsenhausen | 2018/06/01 08:30 | Can Akkuzu v Jakub Kosowski | W | 1-3 |
| Challenger - Ochsenhausen | 2018/05/31 12:30 | Adam Szudi v Jakub Kosowski | L | 3-1 |
| Challenger - Ochsenhausen | 2018/05/31 09:50 | Miroslav Horejsi v Jakub Kosowski | W | 0-3 |
| Challenger - Ochsenhausen | 2018/05/31 07:50 | Patrik Klos v Jakub Kosowski | W | 0-3 |
| Challenger - Ochsenhausen | 2018/05/30 12:30 | Robert Floras v Jakub Kosowski | L | 3-0 |
| Challenger - Ochsenhausen | 2018/06/04 11:50 | Jakub Kleprlik v Frane Kojic | W | 0-3 |
| Challenger - Ochsenhausen | 2018/06/04 09:50 | Frane Kojic v Jakub Folwarski | W | 3-0 |
| Challenger - Ochsenhausen | 2018/06/04 07:50 | Frane Kojic v Fedor Kuzmin | W | 3-2 |
| Qatar Open - ženy | 2018/05/03 18:00 | Frane Kojic v Eric Jouti | W | 3-2 |
| Qatar Open - ženy | 2018/05/02 18:00 | Donghyun Kim v Frane Kojic | W | 1-3 |
| Qatar Open - zmiešaná štvorhra | 2018/04/12 12:10 | Frane Kojic v Alexandre Robinot | L | 1-4 |
| Qatar Open - zmiešaná štvorhra | 2018/03/27 17:20 | Robert Floras v Frane Kojic | W | 1-3 |
| Qatar Open - zmiešaná štvorhra | 2018/03/21 12:20 | Ruwen Filus v Frane Kojic | L | 4-2 |