The club was founded in June 1945 by the Poles who had been forced to leave their homes in former eastern Poland annexed by the Soviet Union (present-day Ukraine).

The club's name comes from the Piast dynasty, which ruled Poland from its beginnings as an independent state in the 10th century, until 1370, and in the city itself until 1532.

The friendship started when BATE fans on their way to a Champions League match in Copenhagen stopped for a Piast game against local rivals GKS Katowice.

Other rivals are local teams Ruch Chorzów, GKS Katowice and the two Bytom clubs, Szombierki and Polonia.

Note: Flags indicate national team as defined under FIFA eligibility rules; some limited exceptions apply.

Note: Flags indicate national team as defined under FIFA eligibility rules; some limited exceptions apply.

Note: Flags indicate national team as defined under FIFA eligibility rules; some limited exceptions apply.