Round: 44 Ground: Hardcourt outdoor
| ITF - M15 Sharm El Sheikh | 2019/11/03 09:00 | Kossek, Daniel v Portmann, Kevin | 6-0,7-5 |
| ITF - M15 Sharm El Sheikh | 2019/10/28 09:00 | Kossek, Daniel v Kai Lemstra | 1-6,1-6 |
| ITF - M25 Santa Margherita | 2019/10/07 12:00 | Kossek, Daniel v Mannapov, Alexander | 4-6,1-6 |
| ITF - M25 Santa Margherita | 2019/10/06 09:00 | Luigi Castelletti v Kossek, Daniel | 6-2,5-7,4-10 |
| Bydgoszcz, Singles Qualifying M-ITF-POL-04A | 2019/08/12 08:00 | Petr Michnev v Kossek, Daniel | 6-1,6-2 |
| Koszalin, Singles Qualifying M-ITF-POL-02A | 2019/08/06 08:00 | Noskin, Egor v Kossek, Daniel | 6-3,6-1 |
| Koszalin, Singles Qualifying M-ITF-POL-02A | 2019/08/05 08:00 | Kossek, Daniel v Borkowski, Mikolaj | 6-7,6-2,10-8 |
| ITF - M15 Antalya | 2019/05/20 07:45 | Gusev, Daniil v Kossek, Daniel | 6-4,6-1 |
| ITF - M15 Sharm El Sheikh | 2019/11/03 08:00 | Hastings Fernandez Oro, Alejandro v Yuichiro Inui | 3-6,3-6 |
| ITF - M15 Karuizawa | 2019/05/28 01:00 | Daisuke Sumizawa v Yuichiro Inui | 6-4,7-6 |
| Tabarka, Singles Qualifying M-ITF-TUN-41A | 2019/05/23 10:00 | Yuichiro Inui v Dougaz, Aziz | 5-7,1-6 |
| Tabarka, Singles Qualifying M-ITF-TUN-41A | 2019/05/21 11:10 | Nicolas Tepmahc v Yuichiro Inui | 6-4,1-6,3-6 |
| Tabarka, Singles Qualifying M-ITF-TUN-41A | 2019/05/20 12:30 | Yuichiro Inui v Sharma, Ashwin Ryan | 6-4,4-6,10-7 |
| Tabarka, Singles Qualifying M-ITF-TUN-41A | 2019/05/15 09:20 | Yuichiro Inui v Alessandro Ingarao | 2-6,3-6 |
| Tabarka, Singles Qualifying M-ITF-TUN-41A | 2019/05/07 08:30 | Bojanovic, Darko v Yuichiro Inui | 6-4,7-6 |
| Matsuyama, Singles M-ITF-JPN-06A | 2019/04/08 01:00 | Shimizu, Kazuki v Yuichiro Inui | 6-2,6-0 |