Peavy expected to start Saturday

PITTSBURGH -- Jake Peavy's previously sore shoulder is responding well to a change in medication, and the former Cy Young Award winner is expected to start Saturday for the Chicago White Sox in Washington.

The right-hander was scratched from his scheduled start Thursday night in Pittsburgh because of shoulder soreness that led him to undergo an MRI exam. No damage was found in the shoulder, and Peavy felt much better on Thursday.

Right-hander Gavin Floyd will start Friday's interleague game against the Nationals, opposing rookie sensation Stephen Strasburg.