[wadeintothem]

I'll tell you what I do on this play.

When I come into the infield, I point at 3B (my back is probably turned to him runners and/or ball), letting PU know thats his call. I use this signal anytime I am expecting PU to take 3b. In this particular situation I would be very concerned with a play developing at 2B and making sure of base touching on my bases. PU has that runner at home/3B. I'll lend him my eyes once the ball is in play but I need him to be ready to take that call, depending on what the defense does.

If the throw goes to 3B and R1 is retreating, I'm expecting that to be his call, but I am watching that play. The base tag responsiblity is a moment in time call in your mind... after that, let the ball take you to the play and communicate.

Pointing to 3B is how I communicate that his base. If I move in on a run down or something, I will verbally let him know I'm taking over 3B.