Hours after he no-no'd the Minnesota Twins, 29-year-old Weaver and fellow Angels pitcher Dan Haren cruised over to the Goat Hill Tavern in nearby Costa Mesa ... and partied their faces off with a bunch of Halos fans.
One source at the bar tells us ... "They were totally cool. They were singing!!!! They let people take pics. Mostly just talking and joking with fans the whole night while they were drinking."

And guess who pitches tonight??? Mr. Haren. Shit, I really like the under too
One source at the bar tells us ... "They were totally cool. They were singing!!!! They let people take pics. Mostly just talking and joking with fans the whole night while they were drinking."

And guess who pitches tonight??? Mr. Haren. Shit, I really like the under too