Is Bill Murray Xavier's lucky charm???
If you're keeping up with March Madness, you know the 11-seed Xavier Musketeers pulled off a major upset (and ruined everyone's brackets) last night when they defeated the 2-seed Arizona.
What you may not know is that the SNL alum's son, Luke Murray, is the assistant coach of the Musketeers squad!
Needless to say, Bill has been following his son's team around the Big Dance — and Twitter has fallen in love with the celeb's school spirit!
Ch-ch-check out what we mean (below):