After a long break, the UEFA Champions League is back, with the 16 teams remaining playing for the quarterfinals across two legs in March. 

Here are storylines to follow from the opening four games Tuesday:

Club Brugge (Belgium) vs. Aston Villa (England) | 12:45 p.m. ET

Regular Champions League watchers may remember this matchup from the league phase in November, when Brugge won on a bizarre goal in the 52nd minute. 

Believing the referee had blown his whistle to stop play, Villa defender Tyrone Mings picked up the ball in his own box. He was wrong. The referee immediately carded Mings for a handball and awarded Brugge a penalty.