Jonathan Papelbon took the mound in the 9th with the Phillies up 4-1 on the Marlins. Then he gave up 4 runs. Then Phillies fans booed him. Then he did this while leaving the field:
(Again, this is in Philadelphia.)
And the umpires saw. And they weren't pleased. And Papelbon got ejected quite forcefully:
So, that's a pretty bad day for a closer.