Athletics right-hander Rich Harden isn't likely to come off the disabled list anytime soon. Harden, who has yet to pitch in a game this season after signing a one-year deal worth $1.5 million as a free agent in the offseason, has been limited to strengthening exercises because of a shoulder injury. There is no timetable on when Harden will be cleared to throw again, though manager Bob Geren said that time should come "relatively soon."