Out of baseline

[CDcoach]

I'm PU. Runner on third with big huge monster leadoff. (he is 1/2 between home and third) Trying to mess with the pitcher knowing that the pitcher won't get him (9-10 yr olds). While standing there staring at the pitcher he is 6 feet left of the Foul line. The pitcher runs at the runner and the runner runs home slides under the tag. Safe. Now coach comes out "Blue he's 6 feet off the baseline". I say "no coach he was 6 ft off the foul line perfectly in his basepath". Coach: "What do you think the lines are there for?" Me(getting irritated after putting up with this coach because he is getting blown away in the game) "Well coach they are called FOUL lines. They are there for me to call it fair or foul."

Now my understanding of the play is that the baseline is from the player at the time the play is made on him to the base. This is what I eventually explained to him. He now asks me to reference in a rulebook and I told him we had to move on. After the game we talked again and I told him I'd see what I could find. Me and this guy usually get along on and off the field. Could someone please refernce it and maybe a short interpretation if needed.