Since his call-up earlier this year, Diego Castillo has shown himself to be an intriguing talent. A few post-break struggles aside, he’s been a dominant piece in a dominant bullpen who is showing he can be trusted in multiple roles.
Can he open? Yep. Can he pitch in the 8th? Yep. Can he do it with 100 mph heat? You betcha... wait, what?
Castillo ran into trouble when his walk rate ballooned in July, when he allowed 9 free passes over 11.2 IP. He turned things around in August, however; he limited his walks to only 3 in 15 IP.