NEW YORK -- Cole Hamels was scratched from his start Wednesday after experiencing shoulder pain while playing catch on Tuesday.
The much heralded prospect with a history of injuries was playing long toss from a distance of 120 feet, and cut that short. Jon Lieber will start in his place, with Brett Myers and Cory Lidle to follow.
Hamels described the sensation as a "pop."
"It's frustrating, especially when you're training so hard to prevent these things from happening," Hamels said. "You don't want to let people down, especially with what I've had to go through. I just want to make sure that the team is aware and they can do something."
Hamels will return to Philadelphia for an examination, and doesn't want to worry too much.
"I have to be optimisitc, but I've had so many [injuries] and don't want to take any more chances," he said.
Health has held Hamels back since he was drafted in 2002. He missed most of the 2004 season with elbow tendinitis, then lost the first half of 2005 due to a broken left hand, and the second half to back problems.
Now it's his shoulder.
"What can you do?" he said. "It's just something that, every time you get an injury, you get stronger and stronger, and you can accomplish new goals whenever you set your mind to it. Things weren't made to be easy. I can't look back on things and worry about other things that are going to happen. You have to worry about the next day and how you're going to make yourself better."
Ken Mandel is a reporter for MLB.com. This story was not subject to the approval of Major League Baseball or its clubs.