After Cardinals pitching coordinator Brent Strom watched the team's top prospect, righthander Shelby Miller, throw a bullpen session during spring training, he had one impression. This was not the same guy he remembered. Miller, the 19th overall pick in the 2009 draft, had slimmed down during the winter, losing what the Cardinals feared was some needed muscle, and his mechanics had eroded. His fastball lacked pop. And at the start of the season so did his performance. In his first turn at Triple-A Memphis, Miller was erratic, prone to homers and what he called "ugly innings," and, most of all, too reliant on his fastball.