Running Lane violation

[rbmartin]

6.05(k) A batter is out when in running the last half of the distance from home base to first base, while the ball is being fielded to first base, he runs outside (to the right of) the three foot line, or inside (to the left of) the foul line, and in the umpire's judgment in so doing interferes with the fielder taking the throw at first base; except that he may run outside (to the right of) the three foot line or inside (to the left of) the foul line to avoid a fielder attempting to field a batted ball;



the last half of the distance from home base to first base... lane need not be marked

interferes with the fielder taking the throw at first base...use your own judgement here as in any interference/obstruction scenario. In my opinion, if the runners presence outside the prescribed runners lane necessitated or caused F2 to throw the ball wildly (ie. rainbow a throw over the batter/runners head), that could be interference even though no contact was made.