BOSTON - "The Greek God of Walks" is walking away from the game.

Former Red Sox infielder Kevin Youkilis is retiring, his agent says. Youkilis played parts of nine seasons in Boston and was a part of World Series teams in 2004 and '07. He was traded to the Chicago White Sox in 2012 and then played an injury-shortened year with the New York Yankees before spending last season in Japan.

In his career, Youkilis had a .281 batting average with 150 homers and 618 RBIs. He also walked 539 times, a skill that earned him the nickname "Euclis, the Greek God of Walks" in the book "Moneyball."

Youkilis was a member of three all-star teams and received the 2008 Hank Aaron Award as the best hitter in the AL.