Kevin Youkilis, a three-time All-Star known affectionately as Yoooouuuuk in Boston and “the Greek God of Walks” in the book “Moneyball,” announced his retirement Thursday.

The 35-year-old was limited to 21 games in Japan last season due to plantar fasciitis.

Youkilis spent most of his 10-year major-league career in Boston, where he was part of World Series champions in 2004 (as a rookie) and 2007.

He was a three-time All-Star (2008, 2009, 2011) who finished third in MVP voting in 2008 and sixth in 2009.

His best season came in 2008, when he hit .312 with 29 homers and 115 RBIs. From 2008 to 2010, he hit .308 with 75 homers, 271 RBIs and a .964 OPS.

In 1,061 games, Youkilis hit .281 with 150 homers and 618 RBIs. In 29 playoff games, he hit .306 with six homers.

The Red Sox traded him to the Chicago White Sox in July 2012 and his last stop in the majors was with the New York Yankees, although a bulging disk in his back cost him most of the 2013 season.

He spent last season with the Rakuten Golden Eagles of the Japan Pacific League, where he hit .215 with one homer and 11 RBIs before being shut down due to the foot injury.

Reliever Uehara remains with Red Sox

The Boston Red Sox re-signed right-hander Koji Uehara to a two-year contract on Thursday.

The deal was reported by to be worth $18 million.

The 39-year-old reliever finished the 2014 season with 26 saves and a 2.52 ERA with eight walks and 80 strikeouts in 64 1/3 innings.

In two seasons with the Red Sox, Uehara has 47 saves in 138 2/3 innings with a 1.75 ERA.