Chelsea Janes does a good job of covering all angles of the Bryce Harper health controversy:

Could those problems be a product of a lingering shoulder injury? Sure. Could they be a product of a slumping hitter struggling to find timing and not seeing the ball well? That conclusion is also a reasonable one. Perhaps time will tell. Perhaps, someday, Harper will. For now, he has not confirmed reports of a shoulder injury. He has not denied it, either.

I thought Harper hit the ball well last night, the hits just hung up for outfielders. He has hit better since his time off, although he slowed down again lately.