Christopher Scott Booker (born December 9, 1976) is a former Major League Baseball pitcher.Booker was drafted in the 20th round of the 1995 amateur draft by the Chicago Cubs. The Washington Nationals signed him as a free agent in November 2005. The Detroit Tigers drafted him in the December 2005 Rule V 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.