The markings of Bryce Harper's progress in center field all seem to be obvious, all subtle as a punch in the mouth. He dives headlong and crashes into walls and chases down balls over his head like a wide receiver. He throws with a rocket launcher affixed to his right shoulder. There seem to be no secrets.

Manager Davey Johnson can see one of the secrets, though. Harper, to his eye, is running differently, better. "Maybe it's just what I'm hoping I'm seeing," Johnson said. But he is pretty certain Harper's gait has evolved in his new position in such a way that will make him more durable and could allow him to stay in center, rather than a corner spot, longer.