In the early days of Major League Baseball (MLB), substituting a player was not allowed except for sickness or injury. An ineffective pitcher would switch positions with another player on the field. The first relief appearance in the major leagues was in 1876 with Boston Red Caps outfielder Jack Manning switching positions with pitcher Joe Borden. In this early era, relief pitchers changing from a position role to the pitcher's box in this way were often called "change" pitchers. This strategy of switching players between the mound and the outfield is still occasionally employed in modern baseball, sometimes in long extra inning games where a team is running out of players. In 1889, the first bullpen appearance occurred after rules were changed to allow a player substitution at any time. Early relief pitchers were normally starting pitchers pitching one or two innings in between starts. In 1903, during the second game of the inaugural World Series, Pittsburgh's Bucky Veil became the first relief pitcher in World Series history.