It isn't. Is he the one pitching, and giving up 7 runs an inning? He pulled Felix yesterday, because he was looking tired. It isn't his fault that the bullpen can't hold an 8 run lead. Stop blaming managers for crappy players. If he makes a mistake, like he did with Bard that other game. Then, yes, blame him for it. But, blaming someone who trusted his bullpen not to blow a huge lead in three innings is being just as stupid and ignorant as Rays fans.