Rule 2 – Section 30 – RUN, RUNNERS, RETIRED RUNNERS
2-30-1 A run is the score made by a runner who legally advances to and touches home plate (9-1).
2-30-2 A runner is a player of the team at bat who has finished his time at bat and has not yet been put out. The term includes the batter-runner and also any runner who occupies a base.
2-30-3 A retired runner is a player of the team at bat who has been put out, or who has scored and is still in live-ball area.