"The toughest thing is just keeping everything kind of sound, the mechanics," Miller said. "Not pitching for about two weeks is not the easiest thing to do, but I've got a lot of time to work on things and work my way back into the bottom of the zone and work on my offspeed pitches, stuff like that. I think the time is going to benefit me."
Cardinals manager Mike Matheny is also hopeful that will be the case. Matheny said Miller's arm strength is fine, but he might be going through a normal rough patch that most pitchers hit during the course of a season.
"It's just a great opportunity," Matheny said. "Rest will be good, but we can moderate it. Work is going to be real important for him right now. He could be a little tired, but I don't think that's it. I think he got to a period during the season that almost everybody gets to and you're just not as sharp. He's still competing and keeping us in games."
Brian Hedger is a contributor to MLB.com. This story was not subject to the approval of Major League Baseball or its clubs.