Baserunner?baseline

Question
We are playing defense and the opposing team has a runner on 3rd and a runner on first with two outs. The runner on first takes his lead but he take it all the way out to right field , standing right beside our right fielder . We have two strikes on the batter and our catches notices him and ask the pitcher to step off. We knew that they wanted us to chase the 1st base runner so the 3rd base runner could score. we told our pitcher just to pitch to the batter in which our pitcher struck him out and ended the inning. Can a base runner do this or is he out of the baseline or is there no baseline until we try and make a play on him . Thanks

Answer
That's an old first and third trick play that believe it or not works a lot of the time, especially with young and or bad defensive teams.  Basically, the point is to draw the throw to home out to be as long as possible.  If you chase the guy out there, you just simply not going to be able to throw the runner out at home.  As for the legallity of the play, it is perfectly legal.  Keep in mind that the baseline is defined as the straight line path between a runners starting position at the time of the play and the base to which he is trying to advance or retreat.  No where in there does it mention where he has to start, as long at he goes directly towards a base when a play is being made on him.  I hope this answers your question.  Feel free to leave feedback :)