CLEARWATER, Fla. -- Phillies right-hander Joe Blanton left the clubhouse Wednesday afternoon with little to say.

But the Phils said he "tweaked" his left oblique muscle while throwing in the bullpen earlier in the day, causing him to cut short the session. General manager Ruben Amaro Jr. said they will know more about the severity of the injury after an examination Thursday.

Blanton, who allowed 11 hits and 11 runs in five innings Monday in a Minor League intrasquad game, is scheduled to start an exhibition game Saturday against the Pirates at Citizens Bank Park. He is scheduled to make his regular-season debut April 8 against the Nationals at Nationals Park.

Word about Blanton's setback followed news that closer Brad Lidge received a cortisone injection Tuesday in his right elbow.

If Blanton can't pitch for an extended period of time, right-hander Kyle Kendrick could take his spot in the rotation.

Fogg, Taubenheim agree to Minor deals

CLEARWATER, Fla. -- The Phillies agreed to terms on Minor League contracts with right-handers Josh Fogg and Ty Taubenheim. They were both scheduled to report to the Carpenter Complex on Wednesday.

Fogg went 0-2 with a 3.74 ERA in 24 appearances (one start) last season for Colorado. Taubenheim went 7-9 with a 3.65 ERA in 26 appearances (19 starts) last season for Triple-A Indianapolis.