Sosa was used in the late innings but was often hit hard, going 2-1 with a 6.45 ERA.
In other news, the Nationals transferred left-hander Scott Olsen from the 15-day disabled list to the 60-day DL. Olsen has not played a game since early July because of left shoulder surgery.
Bill Ladson is a reporter for MLB.com. This story was not subject to the approval of Major League Baseball or its clubs.