Scrimmage kick near the endzone.

[Warrenkicker]

Here is a good one for a back judge. Had this one last night.

K is kicking a scrimmage kick. R muffs it at R-5. R tries to pick it up again at R-3. The ball is now lying at rest inside R-1. K dives to recover the ball at that point. The ball is not possessed until it has crossed the goal line. Who's ball is it where?