| Challenger - Ochsenhausen | 2018/10/22 12:30 | Jakub Kosowski v Jakub Folwarski | W | 3-1 |
| Challenger - Ochsenhausen | 2018/10/22 09:10 | Tomasz Tomaszuk v Jakub Kosowski | W | 0-3 |
| Challenger - Ochsenhausen | 2018/10/22 07:10 | Jakub Kosowski v Florian Bluhm | W | 3-0 |
| Challenger - Ochsenhausen | 2018/08/03 12:50 | Miroslav Horejsi v Jakub Kosowski | W | 1-3 |
| Challenger - Ochsenhausen | 2018/08/03 12:05 | Jakub Kosowski v Fedor Kuzmin | W | 3-2 |
| Challenger - Ochsenhausen | 2018/08/03 09:50 | Jakub Kosowski v Miroslav Horejsi | L | 0-3 |
| Challenger - Ochsenhausen | 2018/08/03 07:10 | Jakub Kosowski v Evgueni Chtchetinine | W | 3-2 |
| Challenger - Ochsenhausen | 2018/08/02 10:30 | Jakub Kosowski v Josip Huzjak | W | 3-2 |
| Challenger - Ochsenhausen | 2018/10/22 11:50 | Tomasz Tomaszuk v Koyo Kanamitsu | W | 0-3 |
| Challenger - Ochsenhausen | 2018/10/22 09:50 | Koyo Kanamitsu v Florian Bluhm | W | 3-0 |
| Challenger - Ochsenhausen | 2018/10/22 07:50 | Koyo Kanamitsu v Jiri Vrablik | W | 3-2 |
| Tschechien - Extraleague | 2018/08/22 07:00 | Yuto Kizukuri v Koyo Kanamitsu | L | 3-0 |
| Tschechien - Extraleague | 2018/08/21 19:00 | Andreas Levenko v Koyo Kanamitsu | W | 1-3 |
| Tschechien - Extraleague | 2018/08/21 08:20 | Koyo Kanamitsu v Cristian Pletea | W | 3-1 |
| Qatar Open - Gemischtes Doppel | 2018/03/20 17:50 | Kwan Kit Ho v Koyo Kanamitsu | L | 4-0 |
| Qatar Open - Gemischtes Doppel | 2018/03/20 12:50 | Antoine Hachard v Koyo Kanamitsu | W | 3-4 |