The 37-year-old right-hander suffered the injury on June 20
while backing up home plate on a play in Cleveland. He went on the
disabled list three days later.
Lieber was 3-6 with a 4.73 ERA in 12 starts this season. He was
the Phillies' Opening Day starter in 2005 and '06, but will become
a free agent after this season.
"He pitched some good baseball for us," said Phillies manager
Charlie Manuel. "If things had been a little bit different, he
could've pitched better. He had the talent."
Lieber will have the surgery at the Mercy Medical Center in
Baltimore, the team said.