Madson had been a terrific reliever for the Phillies before moving into their rotation this season. After struggling in most of his six starts, the 25-year-old right-hander is moving back to the bullpen. He was 3-1 with a 6.82 ERA as a starter. (Updated 5/10/2006) Analysis: The Phillies plan to replace Madson with top pitching prospect Cole Hamels, who will make his major league debut Friday against the Cincinnati Reds.