Wild pitch

Bill Stemmeyer
Wikipedia - "In baseball, a wild pitch (abbreviated WP) is charged against a pitcher when his pitch is too high, too short, or too wide of home plate for the catcher to control with ordinary effort, thereby allowing a baserunner, perhaps even the batter-runner on strike three or ball four, to advance. A wild pitch usually passes the catcher behind home plate, often allowing runners on base an easy chance to advance while the catcher chases the ball down. Sometimes the catcher may block a pitch, and the ball may be nearby, but the catcher has trouble finding the ball, allowing runners to advance."
Wikipedia
W - Bill Stemmeyer
Wild Pitch Records