Thomas Jefferson Pratt (January 26, 1844 – September 28, 1908) was a professional baseball player who played for the Philadelphia Athletics. He played in one game for the Athletics on October 18, 1871, getting two hits in six at-bats. Pratt, along with Elvio Jiménez and Clarence Dow, are the only players to have six at-bats in their only MLB game. Prior to his brief professional career, he played with the old Brooklyn Atlantics in the 1860s. He had an extensive career as an umpire after retiring as a player.

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