Apparently the dude was wearing a Pirates jersey and a Tigers cap.
https://sports.yahoo.com/mlb/breaking-news/article/fan-ejected-after-pirates-rhp-dennis-santana-takes-a-swing-at-him-in-bullpen-031224343.html
Awesome. Those rings taste awesome. Think of the most delicious thing you've ever tasted, then imagine having something that tastes even better. That's what those four rings taste like.