"It kind of goes back to what I said after my last start, just a little mechanically off, so when I did throw it, it didn't have the same action that it had in the past," he said. "But I threw a great bullpen and I think I'm on the right track. It's definitely a pitch that I'm going to lean on a lot. When I don't have that pitch, it's definitely challenging, especially against left-handed hitters. Just more mechanically than anything. I think that's why I've been a little bit off on it."