"The latest is I'll take a few days off from throwing," said Harden, who was examined by a doctor in the Bay Area earlier this week. "I guess you could call it a setback. We'll kind of go day to day."
Harden opened the season on the 15-day disabled list with what the A's are calling a right shoulder injury. But he stressed that the injury is to the teres major muscle, and has nothing to do with his "rotator cuff or labrum."
Harden said rest and rehab should solve this problem, and he admitted that he probably pushed too hard to get back.
"I was close before, feeling good, and kind of hit a point where I kind of got set back a little bit," Harden said. "It basically just needs a little more time. It's frustrating. You want to be out there. Really, it's just a little more time -- then building back up. It wasn't quite ready to get to that point of high-intensity work.
"I maybe just pushed it a little too much. ... It's hard not to. That's always been a problem for any athlete. That's just what you do. It's human nature. You want to be out there. Yeah, I may have done that. Ended up probably making this whole thing take a lot longer than it would have originally."