Mike Piazza will be sidelined until mid-September and perhaps the rest of the season because of a broken bone in his left hand. After Piazza was hit by a foul tip during a game against Pittsburgh on Aug. 16, New York Mets manager Willie Randolph said his catcher would miss at least a few games. Piazza had a CT scan Monday, and the 12-time All-Star said doctors determined the hand needed six-to-eight weeks to heal from the time of the injury. "I know we don't have a lot of season left, but I'm still optimistic that I'll be able to try to come back and help as much as I can," Piazza said. Mets general manager Omar Minaya said Piazza was day to day but probably wouldn't be back until mid-September. Piazza tried his hand out in recent days but wasn't able to catch or hit.