Theory behind B and C positions

[David B]

Originally Posted by bossman72

I was asked a question about positioning last weekend- "Why with R3 only are we in C position?" I didn't have a good answer and I mentioned something about 'playing the percentages.' He then came back with "Well, why don't we go to B when there's 2 outs since the percentages say that the play is going to be at first?" Once again, I had no answer.

So, I defer my answers for this guy to you guys Why are we in the positions mandated by our mechanics books?

Sometimes we have to do what the books request, but most of the time, our groups go with whatever we prefer. I like to stay in B most all of the time.
Some prefer C, but like you stated, I like to be close to the play.

But, I've worked with other groups who mandate move to C.

Playing percentages, what is it, less than 5% of plays at 3rd, so why do we spend so much time worrying about 3rd??

Thanks
David