Running lane violation or game over?

[HugoTafurst]

Originally Posted by EsqUmp

If the defensive player alters her throw as a result of the runner being out of the lane and that complicates the ability of the defender on 1st base to catch the throw, that's interference also.

I think that is the subject of endless debate...

The most common example is probably when F2 throws over the runner (who is outside the lane) and the throw is out of reach of the player covering 1st and the ball goes into right field.

Some will call that Running lane interference...... many will not.

Here is the exact wording of the NFHS rule (from 2011):

She runs outside the three-foot (0.91m) lane and, in the judgment
of the umpire, interferes with the fielder taking the throw at first base (there must be a throw); however, the batter-runner may run outside the three-foot (0.91m) lane to avoid a fielder attempting to field a batted ball. A runner is considered outside the running lane if either foot is completely outside the lane and in contact with the ground.