The Detroit Tigers made an unusual bet on a player with no major league experience, agreeing to a six-year contract with 22-year-old Colt Keith that guarantees the infield prospect $28.6 million. His deal includes three team options that could make it worth $64 million over nine seasons, and there are escalators that could increase the value to $82 million over nine years. Keith is ranked the No. 22 big league prospect by MLB.com. He was promoted to Triple-A Toledo last June 26 and batted .287 with 13 homers and 51 RBIs in 67 games.