| Indonesia Masters - Mixed dubbel | 2017/02/16 18:00 | Sergey Sirant v Mateusz Dubowski | W | 2-1 |
| Thailand Masters - Kval | 2020/01/21 05:55 | Yu Hsien Lin v Sergey Sirant | L | 2-1 |
| Thailand Masters - Kval | 2020/01/21 03:35 | Toma Junior Popov v Sergey Sirant | W | 0-2 |
| Italian Int. | 2019/12/13 09:00 | Brice Leverdez v Sergey Sirant | L | 2-0 |
| Ungern Int. | 2019/11/01 15:20 | Jason Anthony Ho-Shue v Sergey Sirant | L | 2-1 |
| Ungern Int. | 2019/11/01 12:00 | Kalle Koljonen v Sergey Sirant | W | 1-2 |
| Ungern Int. | 2019/10/31 13:10 | Sergey Sirant v Jacob Nilsson | W | 2-1 |
| Dutch Open | 2019/10/11 15:00 | Sergey Sirant v Felix Burestedt | L | 0-2 |
| Dutch Open | 2019/10/10 13:20 | Sergey Sirant v Toby Penty | W | 2-1 |
| European Team Championships | 2020/02/12 19:00 | Leon Seiwald v Mateusz Dubowski | L | 2-1 |
| European Team Championships | 2020/02/11 09:00 | Joshua Magee v Mateusz Dubowski | W | 1-2 |
| Polen - Int. | 2019/09/20 13:40 | Daniel Nikolov v Mateusz Dubowski | L | 2-1 |
| Polish Int. - Kval | 2019/09/19 16:20 | Mateusz Dubowski v Nikolaj Mangor | W | 2-0 |
| Polish Int. - Kval | 2019/09/19 12:50 | Martin Bundgaard v Mateusz Dubowski | W | 0-2 |
| Polish Int. - Kval | 2019/09/19 09:20 | Mateusz Dubowski v Gasper Krivec | W | 2-0 |
| Belarus Int. Qual | 2019/08/30 07:40 | Mateusz Dubowski v Evgeny Chertilin | W | 2-0 |
| Belarus Int. Qual | 2019/08/29 11:00 | Mateusz Dubowski v Oleksandr Kolesnik | W | 2-0 |