David Arthur "Dave" McNally (October 31 1942–December 1 2002) was a Major League Baseball left-handed starting pitcher from 1962 until 1975. He was signed by the Baltimore Orioles and played with them every year but his last one with the Montreal Expos. McNally has the unique distinction as the only pitcher in Major League history to have hit a grand slam and thereby win his own game in the World Series (1970). His bat is in the National Baseball Hall of Fame Museum in Cooperstown, NY.