BOSTON (CBS) – The Boston Red Sox and star slugger David Ortiz have agreed to a two-year extension through 2014, the team announced on Monday.

The 36-year-old Ortiz will be back for his 11th and 12th seasons in Boston, likely ending his career in a Red Sox uniform.

The Red Sox brass wouldn’t want it any other way.

?David Ortiz has made immeasurable contributions to the Red Sox for the past decade,? Executive Vice-President/General Manager Ben Cherington said of his designated hitter. ?He is an historic figure, a beloved hero, and an important player as we build our team for 2013 and beyond.?

?David Ortiz has been one of the most positive influences in Red Sox history,? added Principal Owner John Henry.  ?He has been a leader among his teammates, a favorite among the fans, and a powerful force in the middle of lineups that have produced so much joy and happiness for New England.  He has our gratitude and respect as he continues a career that could culminate in Cooperstown.?

Over his 16-year MLB career, Ortiz has a .285 batting average with 482 doubles, 401 home runs, and 1,326 RBI. His 343 home runs with the Red Sox trail only Ted Williams, Carl Yastrzemski, Jim Rice, and Dwight Evans for most in team history.

Ortiz hit .318 with 23 home runs and 60 RBI in his injury-shortened 2012 season.