Christopher Scott Booker (born December 9, 1976) is a former Major League Baseball pitcher. He is currently the pitching coach for the Billings Mustangs. Booker was drafted in the 20th round of the 1995 amateur draft by the Chicago Cubs. He'd remain in the Cubs organization until the 2001 season where he was acquired by the Cincinnati Reds. Booker remained four years at the minor league level before making his major league debut in 2005. The Washington Nationals signed him as a free agent in November 2005. The Detroit Tigers drafted him in the December 2005 Rule 5 draft and he was immediately purchased from the Tigers by the Philadelphia Phillies. The Kansas City Royals selected him off of waivers on May 12, 2006. In his only appearance with Kansas City on May 13, 2006, Booker gave up thre