This video covers the rules for when a runner makes an intended step towards second base, which typically occurs after an overthrow to the first baseman.

Rich Marazzi

Rules consultant/analyst:  Angels, D’backs, Dodgers, Nationals, Orioles, Padres, Phillies, Pirates, Red Sox, Rangers, Royals, Tigers, Twins, White Sox, Yankees, Bally Sports, YES, and NBC Sports Chicago.