William G. Betts ([?] 1865 â September 9, 1936) was an American Major League Baseball umpire. He was born William G. Betz.
Betts officiated 121 National League games from to . He led the league in ejections with five in . He then umpired in the American League in the and seasons. A machinist, Betts designed a new umpire indicator for National League umpires prior to the season. In 1896, he became the first umpire to use a small wisk broom to clean home plate during games. In between his stints in the National and American leagues, Betts worked Virginia League and the Atlantic League.