Josh Johnson is working to improve his posture while rehabbing his right shoulder injury. A physical therapist suggested to the 6-foot-7 right-hander recently that his natural slouch may have led to his shoulder issues. "It's a matter of posture and a bunch of stuff that just kind of led up to it," said Johnson, who threw off a bullpen mound Monday for the first time since June. "Years and years of being tall, you're always slouching down. Your shoulder's not in a good place." He's aiming to get back to 100 percent health by the start of spring training next February.