2017 Hungarian Junior and Cadet Open | ITTF rankings: Dziadek Kamil 764, Grela Artur 1137 |
2016 Polish Junior and Cadet Open | ITTF rankings: Dziadek Kamil 774, Grela Artur 624 |
2016 Spanish Junior and Cadet Open | ITTF rankings: Dziadek Kamil 774, Grela Artur 624 |
2016 Czech Junior and Cadet Open | ITTF rankings: Dziadek Kamil 774, Grela Artur 624 |
2015 Croatia Junior and Cadet Open | ITTF rankings: Dziadek Kamil 485, Grela Artur 474 |
2015 Belgium Junior and Cadet Open | ITTF rankings: Dziadek Kamil 227, Grela Artur 254 |