White Sox and Thornton agree to extension By Sports Network

American League manager Joe Girardi (R) of the New York Yankees takes the ball from Chicago White Sox' pitcher Matt Thornton (L) as Toronto Blue Jays catcher John Buck looks on after the National League scored three runs in the seventh inning during Major League Baseball's All-Star Game in Anaheim, Calif. July 13, 2010. REUTERS/Alex Gallardo

The Chicago White Sox and reliever Matt Thornton have agreed to terms on a two-year contract extension.

According to MLB.com, the deal will pay the left-hander $5.5 million during the 2012-13 seasons. He is scheduled to be paid $6 million in 2014 with a $1 million buyout.

The 34-year-old was a first-time All-Star in 2010 and finished the season with a 5-4 record, 2.67 earned run average and eight saves in 61 outings. He also posted 81 strikeouts and 20 walks in 60 2/3 innings.

He has a career record of 26-23 with a 3.55 ERA in 410 appearances, one as a starter, in seven seasons with the Mariners and White Sox. Thornton owns a career 436-173 strikeout-to-walk ratio in 400 1/3 innings.