Dewey Williams debuted on June 28, 1944, playing for the Chicago Cubs at Wrigley Field; he played his final game on September 26, 1948, playing for the Cincinnati Reds at Crosley Field.
Dewey Adkins debuted on September 19, 1942 and played his final game on October 2, 1949.
Mark Dewey debuted on August 24, 1990 and played his final game on September 29, 1996.
NFL player Dewey McDonald played for California (PA).
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Dewey Adkins debuted on September 19, 1942, playing for the Washington Senators at Griffith Stadium I; he played his final game on October 2, 1949, playing for the Chicago Cubs at Wrigley Field.
Mark Dewey debuted on August 24, 1990, playing for the San Francisco Giants at Candlestick Park; he played his final game on September 29, 1996, playing for the San Francisco Giants at Candlestick Park.
Dewey McDougal debuted on April 24, 1895, playing for the St. Louis Browns at Robison Field; he played his final game on May 12, 1896, playing for the St. Louis Browns at Robison Field.
Dewey Metivier debuted on September 15, 1922, playing for the Cleveland Indians at League Park II; he played his final game on September 11, 1924, playing for the Cleveland Indians at League Park II.
Dewey Robinson debuted on April 6, 1979, playing for the Chicago White Sox at Comiskey Park; he played his final game on October 4, 1981, playing for the Chicago White Sox at Comiskey Park.
NBA player Deron Williams played for Illinois.
NBA player Derrick Williams played for Arizona.
NBA player Elliot Williams played for Memphis.