| Hellas Open | 2019/08/09 12:30 | Gergely Krausz v Mateusz Dubowski | L | 2-0 |
| Lithuanian Int. Qual | 2019/06/07 06:00 | Brian Holtschke v Mateusz Dubowski | W | 0-2 |
| Latvia Int. | 2019/05/31 16:30 | Aram Mahmoud v Mateusz Dubowski | L | 2-0 |
| Latvia Int. Qual | 2019/05/31 06:00 | Michael Giesinger v Mateusz Dubowski | W | 0-2 |
| Latvia Int. Qual | 2019/05/30 15:00 | Tony Lindelof v Mateusz Dubowski | W | 0-2 |
| Polish Open Qual | 2019/03/28 11:00 | Mateusz Dubowski v Antonio Li | W | 2-0 |
| Swiss Open WD Qual | 2019/02/27 07:00 | Mateusz Dubowski v Andreas Hoffmann | W | 2-0 |
| Swiss Open WD Qual | 2017/09/27 14:10 | Adi Pratama v Mateusz Dubowski | L | 2-1 |
| Giraldilla Int. XD | 2018/03/27 17:30 | Samuel Hsiao v Nhat Nguyen | L | 0-2 |
| Swiss Open WD Qual | 2018/03/27 13:20 | Samuel Hsiao v Aneeth Kumar Repudi | W | 2-0 |
| Swiss Open WD Qual | 2018/03/27 08:05 | Toma Junior Popov v Samuel Hsiao | W | 0-2 |
| Indonesia Masters XD | 2017/10/31 16:20 | Samuel Hsiao v Iskandar Zulkarnain | L | 0-2 |
| Swiss Open WD Qual | 2017/10/10 11:30 | Ondrej Kral v Samuel Hsiao | L | 2-1 |
| Giraldilla Int. XD | 2017/09/13 11:00 | Rasmus Messerschmidt v Samuel Hsiao | L | 2-1 |
| Giraldilla Int. XD | 2017/04/10 08:59 | Samuel Hsiao v David Jones | L | 1-2 |
| All England Open | 2017/02/28 17:30 | Samuel Hsiao v Raul Must | L | 0-2 |