I disagree that Andriese is a bad move.
Garrett Whitlock, Boston Red Sox
“The [changeup] I throw now, I started messing around with during Tommy John recovery. I had my fastball and slider, and I knew that I was going to need the third pitch if I was going to still be a starter. Obviously, this was before coming to the Red Sox. When I got to spring training, Matt Andriese helped me a lot with it — things like how to throw it and how to really use it in counts.
“I’d had a changeup before, but it was never really that good. It was always too hard. Then I saw the video of Pedro Martinez talking to Dan Plesac about why his changeup had been too hard: he’d been using two dominant fingers to throw it. So he slid the ball over a little bit, and used two non-dominant fingers. That kind of deadened it a little bit, so during TJ rehab, that’s what I did. I moved it over to my ring finger and my pinky. Then I played catch with it every day and developed a feel for it.
“[Andriese] said that pretty much everyone will tell you, ‘Throw it the same way as your fastball, throw it the same way as your fastball,’ but that’s not really how he visualizes it. He visualizes it as like, ‘Throw it like a well-completed pitch, but always focus on pronation.’ He said to focus on making sure you get the ring finger through the ball, to really get that spin you’re looking for. That’s kind of what I focus on, making sure I’m getting that ring finger through the ball. Everyone naturally pronates, so as long as your hand is on top, you’re going to naturally pronate through the ball.
“I’m looking for more of that three o’clock, nine o’clock — that sideways spin — but I have no idea what the spin rate is on it. I’m just trying to miss barrels. I’ll go to our analytics guys to see how it grades out, and they tell me that the grades are good, so as long as they’re happy with it, and it’s getting outs… that’s all I’m worried about.”
Without Andriese, Whitlock may not have a changeup.