BKS Stal Bielsko-Biala and Goral Zywiec fans clashed on the pitch at Bielsko-Biala’s Municipal Stadium before their sides’ match on Sunday.
Legia’s away game against Lech Poznan was abandoned on Sunday after Lech hooligans threw smoke bombs and invaded the pitch.
GKS Tychy’s home match against Ruch Chorzow was briefly halted on Saturday because of trouble in the stands.
Saturday’s derby clash between Piast Gliwice and Gornik Zabrze was abandoned because of fan trouble.
Ruch Chorzow hooligans blocked a major highway in Katowice on Friday evening to burn a giant GKS Katowice flag.
Gornik Leczna fans caused trouble during their reserve team’s away match against Unia Hrubieszow in the Polish fifth division on Sunday.
Promien Zary fans tried to attack their Zielona Gora rivals during their sides’ Polish IV Liga match on Saturday.