Liriano reached an agreement on a two-year deal worth around $14 million on just before Christmas, pending a physical. Pittsburgh general manager Neal Huntington did not get into specifics about the nature of the injury, only saying the team remains in contact with Liriano.
Pittsburgh had penciled in Liriano to be the team's No. 3 starter behind A.J. Burnett and Wandy Rodriguez. With the left-hander's status uncertain, Pittsburgh acquired right-hander Jeanmar Gomez from Cleveland Wednesday.