No one has ever told me this before...

[tmp44]

JV game today, V-mechanics. Runners on 1st and 2nd, 1 out. I'm PU, partner is in C. Batter check swings, and hits a dribbler down the 3rd base line; ball goes about 10 feet. I jump out to make the fair/foul call, signal fair, and as I look up from the ground as I'm pointing, I see my partner moving into the "B" area to make a possible call at first. It's obvious the play is going to be at 3rd, catcher throws there, R2 is out by 3 steps -- BU's back is to the play, so I come up with the out.

In between innings I go to talk to my partner, and he tells me at our last association meeting (which I had to miss due to school), when they were reviewing some aspects of the V, our rules interpreter said that in this situation, on any bunt or small roller down the 3rd base line, since the PU is coming out of the box to make the fair/foul call, he should then also take the play at 3rd. I've been working the V for 3 years, and I've never done this before. Is this standard practice? Did I just miss the boat on this one somewhere? And, if this is what is supposed to be done, what's the reasoning behind it?