San Diego, California - The San Diego Chargers added another player to their AFC Divisional Playoff roster by agreeing to terms on a two-year deal with former St. Louis Rams quarterback Kellen Clemens.

A former second-round pick in the 2006 NFL Draft, the 6-2, 220-pound veteran spent the last two seasons with the St. Louis Rams as a backup to starter Sam Bradford. When Bradford went down with a knee injury in late October of last season, Clemens took over as the starter for the Rams’ last nine games. He completed 142 of 242 (.587) good for 1,673 yards with eight touchdowns and seven interceptions.

A native of Burns, Oregon, Clemens was selected by the New York Jets in the second round (49th overall) in ’06 after throwing for 7,555 yards and 61 touchdowns at the University of Oregon. Clemens signed with Washington in 2011, but was released at the end of training camp. He later signed with Houston in late Nov. 2011 and was claimed by the Rams after being waived Dec. 6.

Clemens will be 31 when the 2014 NFL season kicks off in September.

Clemens becomes the fourth unrestricted free agent to sign or agree to terms with the Chargers since free agency began on Tuesday, joining inside linebacker Kavell Conner (Indianapolis), running back Donald Brown (Indianapolis) and tight end David Johnson (Pittsburgh). Prior to the start of free agency, the Chargers retained the services of three returning players who were set to become free agents: guard Chad Rinehart, inside linebacker and defensive captain Donald Butler and safety and special teams captain Darrell Stuckey.