Answer
Rule 7.13, known as the "Buster Posey Rule," prevents a runner from intentionally and aggressively attempting to injure a catcher during a play at home plate. It was implemented after Buster Posey, a catcher for the San Francisco Giants, suffered a season-ending injury in 2011 when a runner slid into him with excessive force. The rule aims to protect catchers from dangerous and unnecessary contact at home plate.