Where do you put the BR?

[yawetag]

I'd leave him at 3B. How is this any different than F6 acting like F2 overthrew on a steal? If the outfielder had left the ball where it was, BR would have only been at 2B.

If this was an attempt to trick the runner from slowing down, then that's the runner's fault. We tell coaches two things during pre-game related to balls that roll under fences:
1. When the fielder sees the ball behind the fence line, throw your hands in the air and do NOTHING to the ball.
2. When the runner sees this, he'd better bust *** around the bases, because the ball may be judged in play (or the fielder may attempt to reach for it)