The Redskins have signed tight end Dominique Byrd and offensive lineman Jonathan Compas to the roster, the team announced on Tuesday.

In addition, the Redskins added running back Tristan Davis to the practice squad and released guard John Malecki from the practice squad.

Byrd and Compas take the roster spots vacated by running back Tim Hightower and tight end Chris Cooley

Byrd is the most notable newcomer. A 6-3, 255-pounder, he was a third-round draft pick of the St. Louis Rams in 2006. He has also had stints with the Arizona Cardinals and Seattle Seahawks.

For his career, Byrd has played in 15 games, posting six career catches for 83 yards and a touchdown. The touchdown was a 27-yarder against the Redskins in a Dec. 24, 2006 game when Byrd was with the St. Louis Rams.

Byrd played college football at USC from 2002-05. The last two years, he played alongside current Redskins starting tight end Fred Davis.

In four years at USC, Byrd appeared in 39 games and totaled 81 receptions for 968 yards and four touchdowns.

Compas, 6-3 and 300 pounds, entered the NFL as an undrafted rookie with the Oakland Raiders in 2009. He has had stints with the Tampa Bay Buccaneers and, most recently, New England Patriots.

Compas played college football at U.C. Davis (Calif.), where he played in 36 regular season games from 2005-08. He saw action at both right guard and right tackle at U.C. Davis.

Davis, 5-10 and 212 pounds, was most recently on the Pittsburgh Steelers practice squad. He entered the NFL as an undrafted rookie with the Detroit Lions in 2009.

Davis has also had NFL stints with the Miami Dolphins, Minnesota Vikings and New Orleans Saints.

He played college football at Auburn.