Harrison isn't starting Thursday against the Royals.

Harrison returned from a shoulder injury Tuesday against Kansas City, but he'll be out of the lineup for a second straight game. He's feeling better after dealing with a back issue last week but is sitting as a precautionary measure. However, manager Tony La Russa is hopeful that Harrison will return Friday against the Angels, Vinnie Duber of NBC Sports Chicago reports. Leury Garcia will start at second base and bat ninth.