Sheridan umpired in four of the first seven World Series: 1905, 1907, 1908 and 1910; he also umpired in the earlier Temple Cup NL championship series in 1896. In the winter of 1913–1914, he and Klem were the two umpires accompanying the Chicago White Sox and New York Giants on their world tour. Along with Bob Emslie and Tim Hurst, he is one of only three umpires who umpired both before 1893, when the pitching distance was only 50 feet, and also after the NL and AL formally recognized one another as major leagues in 1903. He is the only umpire active prior to 1893 who went on to officiate in a World Series.