William M. "Ad" Yale (April 17, 1870 – April 27, 1948) was a professional baseball player.

He appeared in four games in Major League Baseball for the 1905 Brooklyn Superbas as a first baseman.

[1] He also had an extensive minor league baseball career, playing from 1897 until 1914 for a number of teams, primarily the Bridgeport Orators, for whom he played from 1898 to 1905.

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