Honestly, from what I've seen of Harden, it seems that he can dial it up or down at will. He knows his limitations, and he knows what he can get away with and still get outs. I don't think he's hurt, I just think he realizes he's not a 100 mph pitcher anymore, so he stays within his boundaries and gets the job done. Harden's velocity is one thing that hasn't concerned me since he's arrived.