Adding the cutter and 2 seamer to the arsenal and using the slider a lot less has made a big difference. His command is also so much better. He's gone from a guy who didn't trust his stuff and couldn't command the ball to a really confident guy with excellent command. His BAA was .338 last year, down to .227 this year. His WHIP dropped from 1.90 to 1.12. His K/BB ratio has gone from 1.7 to 2.8. Wow.
Kudos to Gavin. Really happy to see what he's done.