Since then, Stal has also been active at the European stage in the Basketball Champions League and FIBA Europe Cup.

In the semi-finals, Stal lost to Stelmet Zielona Góra but won the third place series against Energa Czarni Słupsk.

In 2019, Stal won the Polish Basketball Cup after defeating Arka Gdynia 77–74 in the final.

In the 2020–21 season, Stal played in the FIBA Europe Cup and reached the Final Four of the tournament.

With players like Aigars Šķēle, Ojārs Siliņš and Nemanja Đurišić, Stal hit the mark and won its first Polish Supercup.

By winning the European North Basketball League, Stal won its first international title.

Before his second season with the team, Latvian international Šķēle became the first ever current state Stal Ostrów Wielkopolski player in the FIBA Basketball World Cup.