This probably isn't great news for the Indianapolis Colts, who play the Baltimore Ravens Sunday in a first-round playoff game. The Ravens' superb and ferocious Ray Lewis has a big incentive to play even harder: It could be his last game. The future Hall of Famer announced today that he's retiring after 17 seasons when the playoffs end, reports the Baltimore Sun. "I've ran my course," he said. "It's time for me to create a different legacy." The Sun says he's "in the conversation as one of the best middle linebackers in NFL history." See Bleacher Report for reaction and more on his career.