Mechanics

[bake17]

I would like to hear your thoughts on the coverage of a ball hit (grounder or pop fly) up the 1st. base line. Does the plate ump take the ball up to and including the bag, or up to the cut-out, or up to the start of the running lane? I have always taken the ball up to and including the bag, but recently have had a partner get on me for taking a play he says should have been his(tag on a runner half way up the line). I told him we should have covered it in our pre-game a little better.

Thanks,
bake17