The Mariners have signed outfielder Eric Byrnes to a one-year deal, according to a team press release.
Arizona released the 33-year-old earlier this month after he hit just .218/.271/.382 in 482 plate appearances during the first two seasons of the three-year, $30MM extension he signed prior to the 2008 season. The Diamondbacks are still on the hook for Byrnes' $11MM salary in 2010, less whatever the Mariners are paying him (likely the league minimum).
To make room for Byrnes on the roster, Seattle designated first baseman Tommy Everidge for assignment, reports Ryan Divish of The Tacoma News Tribune (via Twitter). They had just claimed Everidge off waivers from the Athletics two weeks ago.