Twardzik made his first-team debut for Celtic on 8 January 2012, coming on as a 70th minutes substitute in a Scottish Cup win against Peterhead. He made his second appearance in the next round of the Scottish Cup against Inverness. Coming on as a late substitute in the 93rd minute. His league debut came on 7 April in a 6–0 against victory Kilmarnock, he came on shortly after the start of the second half and assisted the fifth goal with a clever back-heel.
Filip Twardzik was born in Trinec, Czechia on 10 February 1993 (age 29). Follow @FilipTwardzik on Twitter.