The 28-year-old Zobrist, a second baseman who has spent his entire five-year major league career with the Rays, hit .297 with 27 home runs, 91 RBI and 17 stolen bases in 2009.
"He's always upbeat," twice All-Star Evan Longoria said of team mate Zobrist on the club's website (http://tampabay.rays.mlb.com).
"He's got a great attitude. He loves being at the baseball field."
The first three years of the extension are guaranteed, with the team holding options for the 2014 and 2015 seasons.
(Writing by Steve Ginsburg in Washington, editing by Tony Jimenez. To query or comment on this story email firstname.lastname@example.org)