Billy Butler debuted on May 1, 2007, playing for the Kansas City Royals at Kauffman Stadium; he played his final game on September 29, 2013, playing for the Kansas City Royals at Kauffman Stadium.
Billy Milligan debuted on April 30, 1901, playing for the Philadelphia Athletics at Columbia Park; he played his final game on May 15, 1904, playing for the New York Giants at Polo Grounds III.
Billy Sunday debuted on May 22, 1883, playing for the Chicago White Stockings at Lake Front Park II; he played his final game on October 4, 1890, playing for the Philadelphia Phillies at Philadelphia Baseball Grounds.
Billy Alvord debuted on April 30, 1885 and played his final game on July 8, 1893.
Billy Beane debuted on September 13, 1984 and played his final game on October 1, 1989.
Billy Bowers debuted on April 24, 1949 and played his final game on June 9, 1949.
Billy Urbanski debuted on July 4, 1931, playing for the Boston Braves at Braves Field; he played his final game on April 23, 1937, playing for the at .
Billy Cox debuted on September 20, 1941, playing for the Pittsburgh Pirates at Forbes Field; he played his final game on June 11, 1955, playing for the Baltimore Orioles at Memorial Stadium.
Billy Sunday was an outfielder for the Chicago White Stockings (now the Cubs) between 1883-1887.
Billy Alvord debuted on April 30, 1885 and played his final game on July 8, 1893.
Billy Beane debuted on September 13, 1984 and played his final game on October 1, 1989.
Billy Bowers debuted on April 24, 1949 and played his final game on June 9, 1949.
Billy Arnold debuted on April 26, 1872 and played his final game on May 2, 1872.
Billy Ashley debuted on September 1, 1992 and played his final game on July 30, 1998.
Billy Baldwin debuted on July 29, 1975 and played his final game on September 28, 1976.
Billy Barnie debuted on May 7, 1874 and played his final game on June 28, 1886.
Billy Brewer debuted on April 8, 1993 and played his final game on October 2, 1999.
Billy Buckner debuted on August 25, 2007 and played his final game on July 23, 2013.
Billy Burke debuted on April 30, 1910 and played his final game on September 26, 1911.
Billy Campbell debuted on April 17, 1905 and played his final game on August 23, 1909.