Just ask your Rav how many Averos all those people at yesterday and Todays Mets (I am sure there were alot today as well, they had the $2.50 tickets) game committed.
You dont have to go , but dont tell people its assur and that things like Prizus and immorality occur, when they dont (especially Sunday Afternoon games when there are ALOT of Kids there, including Frum kids)