| Polish Int. Qual | 2019/09/19 12:50 | Bundgaard, Martin v Dubowski, Mateusz | W | 0-2 |
| Polish Int. Qual | 2019/09/19 09:20 | Dubowski, Mateusz v Krivec, Gasper | W | 2-0 |
| Belarus Int. Qual | 2019/08/30 07:40 | Dubowski, Mateusz v Chertilin, Evgeny | W | 2-0 |
| Belarus Int. Qual | 2019/08/29 11:00 | Dubowski, Mateusz v Kolesnik, Oleksandr | W | 2-0 |
| Hellas Open | 2019/08/09 12:30 | Krausz, Gergely v Dubowski, Mateusz | L | 2-0 |
| Lithuanian Int. Qual | 2019/06/07 06:00 | Brian Holtschke v Dubowski, Mateusz | W | 0-2 |
| Latvia Int. | 2019/05/31 16:30 | Aram Mahmoud v Dubowski, Mateusz | L | 2-0 |
| Latvia Int. Qual | 2019/05/31 06:00 | Giesinger, Michael v Dubowski, Mateusz | W | 0-2 |
| Polish Int. Qual | 2019/09/19 09:55 | Mangor, Nikolaj v Kobzar, Yevhen | W | 2-0 |