This weekend, we had a batter swing at a 3rd strike in the dirt. The ball bounced off the catcher to slightly down the first base line, not far from the plate. The catcher came out to get the ball as the runner was running down the base line. The runner ran into the catcher and could not get around her before the catcher was able to pick up the ball and tag her. Umpire called her out, no obstruction. My questions are 1) should this be obstruction or they both have a right to be there, so play on? 2) Where can this situation be found in the rule book