Quick Pitch

[Sven K]

OBR addresses the quick pitch with regard to the batter, but I can find no provision as to quick-pitching a runner.

Am I right in thinking that the runner must ask for time or the batter must step out and do the same to afford the the runner the opportunity to dust himself off?

Without asking for time, may the pitcher get the ball back, quickly come set, and deliver the pitch while the runner is still face down in the dirt? It seems a little unfair to the runner to force him to dive back (maybe repeatedly) and then rush through the set position while he is spitting the grit out of his teeth. It seems unfair, but that's how I read it. Thoughts?