Bill Murray is a known sports enthusiast, as well as a very supportive father — put the two together and you get one morale-boosting courtside performance. We now have video and photographic evidence attesting to that fact, as Murray’s son Luke is an assistant coach for the Xavier Musketeers. Murray showed up for the team’s game against Maryland in the first round of the NCAA tournament on Thursday, cheering his way through Xavier’s victory like it was some kind of once-in-a-lifetime sports event. There’s still plenty of March Madness bracketing to go, which translates to ample opportunity for Murray to turn full mascot.