So long as he doesn't do any of the following he'll be fine:
don't ever bunt unless the batter has no clue as to how to bunt
let your pitcher bat with runners on base when he's north of 90 pitches
double switch whenever you take out a reliever, no matter the situation
bat the pitcher 8th
Use Edwin Jackson in a critical relief role
Use Aaron Barrett in a critical relief role
Use Drew Storen in a critical relief role
Use Blake Treinen in a critical relief role when facing a LHB
Use Jonathan Papelbon after he chokes your franchise player
Save your closer in case you get a save chance in a tie game in extra innings
Bat Ramos cleanup
not allow any pitcher to pitch in any situation other than their defined roles