I will never ever ever ever understand this. A pitcher faces LH/RH batters all game. I understand the "matchup" - but unless the pitcher is having a great day and locating pitches, then don't yank the guy who IS - and put in someone who 'may' not have a great day.

Singer fanned them - leave his ass in until his control starts to slip.

These stupid MLB managers assume every pitcher is going to be in perfect command of their pitches every day.