It happened during the national SuperLiga tournament in a match against Marek Pietralczyk.
[4] In 2015, he achieved his greatest international success by advancing to the Last 16 stage of the Polish Open.
[5][6] During the Polish Championship in 2016, he finished the singles competition in the semi-finals, winning the bronze medal.
Krupka advanced to the final of this tournament, where he faced Łukasz Wacławski.
On the way to the final, he eliminated the leading Polish players Krzysztof Kciuk and Sebastian Biela.