Lieber was activated from the disabled list on Thursday by the Phillies and will start Friday night when Philadelphia plays Pittsburgh. The right-hander was placed on the DL with a groin injury more than a month ago. He is 3-5 with a 5.79 ERA in 11 starts. Scott Mathieson was optioned to Double-A Reading to make room for Lieber on the roster. (Updated 7/6/2006)