John F. Sheridan (1862 – November 2, 1914) was an American umpire in Major League Baseball. In his 30-year career as an official, he worked 18 seasons between 1890 and 1914 in three major leagues. Several of Sheridan's contemporaries considered him to be the best major league umpire. He pioneered the crouching stance used by modern umpires at home plate. In 1946 Sheridan was named to the Honor Rolls of Baseball of the Baseball Hall of Fame. Wikipedia
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