Interference

[RKBUmp]

Not per USA rules and case plays unless the runner was judged to have done something deliberate. Fielder gets one chance to field the ball, if they muff it the runner must then do something intentional to interfere. The case play covering it is a ground ball to short with runner on 2nd. Short muffs fielding the ball and it rolls slightly behind her. The runner is attempting to run behind the shortstop and makes contact with her as she is trying to pick up the ball. The ruling is not only is it not interference since the runner did nothing intentional, it should ruled as obstruction on the shortstop.