The designated hitter (DH) is a baseball player who bats in place of another position player, most commonly the pitcher. Unlike other players in a team's lineup, they generally only play as an offensive player and usually do not play defense as a fielder or a pitcher during a game. Due to their specialized offensive-only role, the designated hitter is generally expected to produce above average offensive stats and production compared to other players who play defense.[2]
In Major League Baseball, the position is authorized by Rule 5.11 of the Official Baseball Rules.[3] It was adopted by the American League in 1973 and by the National League in 2022, making it universal in MLB.[4] Within that time frame, nearly all amateur, collegiate, and professional leagues worldwide have adopted the designated hitter or some variant,[5] except for Nippon Professional Baseball's Central League.[6]
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