Kaczkowski faced Georgian European champion and World Championships bronze medallist Sandro Bazadze in the final at the Olympic Centre of the Polish Olympic Committee, but overcame his well-fancied opponent 15-14.

It was a remarkable victory for the world number 74, who had earlier beaten Italy's Michele Gallo 15-14 in the semi-finals and Iran's Farzad Baher 15-12 in the quarter-finals.

That followed on from a 15-11 round-of-16 victory over China's Yan Yinghui and a 15-11 win against South Korea's Olympic team gold medallist Kim Jun-ho in the round-of-32.

Kaczkowski beat Japan's Tomoaki Chano 15-5 and Canada's Olivier Desrosiers 15-10 in the preliminary phase.

Bazadze's run to the final featured a 15-12 victory in the semi-finals against Italy's Tokyo 2020 silver medallist Luigi Samele.

The team event in the Polish capital was won by South Korea's Do Gyeong-dong, Gu Bon-gil, Ha Han-sol and Kim, who beat Hungary's Tamás Decsi, Csanád Gémesi, András Szatmári and Áron Szilágyi 45-37 in the final.

Bronze went to the United States' Eli Dershwitz, Daryl Homer, Andrew Mackiewicz and Grant Williams, who overcame Italy's Luca Curatoli, Gallo, Samele and Pietro Torre 45-38.

Padua in Italy is set to stage the next men's team sabre FIE World Cup on March 4, followed by an individual and team event in Hungary's capital Budapest from March 24 to 26.