Originally Posted by OnBaseMachine
Chapman's fastball isn't straight. Go read some of the quotes from opposing players in Spring Training who raved about the movement on Chapman's fastball and other pitches. But yeah, I agree that he needs to mix up his pitches a little more. I'm not sure why the coaching staff would allow him to throw that many fastballs.
I didn't have access to do interviews after the game, but I only have two guesses and both very well could be wrong. First, it was very chilly last night, mid-40s at best, so maybe they wanted him to pound the fastball inside because of the cold weather.
My second theory, which I think might hold more merit, is that they have him throwing more fastballs to build arm strength to pitch deep into games consistently. Obviously the fastball velocity is there, but by throwing it more often now, he'll have a better chance of having that high-90s velocity in the sixth, seventh and eighth innings when he'll need it most.