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In baseball, the double switch is a type of player substitution. The double switch is typically used to make a pitching substitution, while simultaneously placing the incoming pitcher in a more favorable spot in the batting order than was occupied by the outgoing pitcher. (On the assumption that the pitcher will be a poor hitter, the incoming pitcher will generally take the spot in the batting order of a position player who has recently been put out, so as to avoid the pitcher making a plate appearance.) To perform a double switch (or any other substitution), the ball must be dead.[1]:Rule 3.03


Since the batting order can only be changed as a result of a player substitution,[Note 1] while the defensive arrangement may be changed freely (among players currently in the game), the double switch typically takes the following form:

  1. Player A (outgoing pitcher, batting soon) is replaced by Player B (a position player), taking Player A's place in the batting order.
  2. Player C (outgoing position player, batting later than Player A) is replaced by Player D (a pitcher), taking Player C's place in the batting order.
  3. Implicitly, Player B and Player D switch defensive positions (so that Player D is pitching in place of Player A, and Player B is fielding in place of Player C).[Note 2]

In the short term, the lineup is strengthened because a poor-hitting pitcher will not make a plate appearance soon. The disadvantage is that a position player (often referred to as the victim of a double switch) must be removed from play and replaced by another, often inferior, position player. The advantage of the double switch over pinch hitting is that it uses up fewer players. If a relief pitcher is brought in before the at-bat, then the manager can substitute a pinch-hitter for him. However, this would require a new pitcher for the next half-inning. By using a double switch, an incoming pitcher can be left in the game for a substantial period before his turn in the batting lineup arrives, no matter what the previous batting order was.

While the double switch plays an important role in the National League, the designated hitter (DH) rule has effectively eliminated the advantages of the double switch in games using American League rules—so the double switch is rarely used by AL teams.[2] The designated hitter's role is to bat in the pitcher's spot in the lineup.[1]:Rule 6.10(b) Major League rules do not allow a multiple substitution involving a DH to alter the lineup position of the DH.[1]:Rule 6.10(b) However, although uncommon, it is possible to forego the DH privilege (e.g. if the DH becomes a position player), and then utilize the double switch later with that player. It can also be used by an AL team playing on the road during interleague play, because MLB rules call for the rules of the home team to be used (whether or not there is a DH) when teams from different leagues meet.

A double switch has infrequently resulted in a team batting out of turn because the lineup card was not updated to reflect the change, either because the umpires were not informed of the change, or because the change was not recorded.[3]


  1. ^ No player currently in the game may legally bat in place of another player in the game (except as a result of the designated hitter rule[1]:Rule 6.10(b)). However, it is possible to successfully bat out of order, if the opposing team does not appeal the violation.[1]:Rule 6.07
  2. ^ According to Major League rules, when more than one defensive substitution is made at the same time, the manager must specify any changes to the batting order, or the umpire-in-chief will determine the order by applying Rule 3.03, which states that "[a] substitute player shall bat in the replaced player’s position in the team’s batting order."[1]:Rule 3.03


  1. ^ a b c d e f Official Baseball Rules (1987 ed.), St. Louis, MO, U.S.A.: The Sporting News, 1987 [1949], ISBN 9780892042401, ISSN 0078-3846, OCLC 15686302, "This code of rules is written to govern the playing of baseball games by professional teams of the American League of Professional Baseball Clubs, the National League of Professional Baseball Clubs, and the leagues which are members of the National Association of Professional Baseball Leagues."   (Current edition available online from Major League Baseball.)
  2. ^ Chass, Murray (14 June 1997), Look Closely, It's N.L. Magic: A Double Switch, The New York Times,, retrieved 24 April 2009  
  3. ^ "Baker, umps not on same page on double switch", (Chicago, IL, U.S.A.: Associated Press), 16 April 2004,, retrieved 24 April 2009  


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