After winning 247 games, Mike Mussina lost his spot in the Yankees' rotation Tuesday. Following three terrible starts, the right-hander was told by Joe Torre that he'll be passed over for his next scheduled start Saturday against Tampa Bay. "He was disappointed, naturally. This was very difficult for me," Torre said. "We have relied on him every year since he's been here." The Yankees will call up touted prospect Ian Kennedy, a first-round draft pick last year, from Triple-A Scranton/Wilkes-Barre to pitch against the last-place Devil Rays in the middle of a pennant race.