William Carl Sadler (born October 11, 1976) is an American former Major League Baseball player.

Sadler attended high school in Perry, Florida, and was selected by the Montreal Expos in the 34th round of the 1996 Major League Baseball Draft.

[2] In 2001, Sadler spent most of the season with the Kinston Indians, finishing with a win-loss record of 6-0, a 1.88 earned run average (ERA), and 78 strikeouts in 27 appearances.

He spent 2002 with the Akron Aeros and Buffalo Bisons, and had ERAs of 2.33 and 1.93 in 33 combined games, which led to his major league debut.

[1] Sadler made his major league debut on July 31, 2002, and played in 24 games, going 1-2 with a 4.43 ERA.