In the early days of baseball, when
rosters were much more limited, there were
courtesy runners in addition to pinch runners. A courtesy runner was put in when the normal runner was temporarily incapacitated by an injury. A courtesy runner had to be agreed by the opposite manager, and his presence in the game was not considered as an official substitution. He could therefore be used again once his running duty was completed, or could be a player already in the line-up, and the player for whom he ran would usually return to the game in the next half-inning. In contrast with pinch runners, courtesy runners tended to be slow base runners. The last courtesy runner in a Major League Game was used in 1949.