"I've been feeling great, pitching good, and yeah, it's kind of out of nowhere," O'Day said. "I wish I knew. We'll try to figure it out. It's just something I have to deal with. I've had a torn labrum since 2009, so it's happened a few times in my career. It's just part of it. It's not natural to throw as much as we do. We'll try to figure it out and try to stay on top of it."