Vikings signed OT Brandon Keith, formerly of the Cardinals. Keith, 28, spent last season out of football after struggling mightily as Arizona's starting right tackle in 2011. Working against Keith is his lack of versatility. He is a right-tackle only and backup linemen need to be able to play multiple positions. Keith obviously is no threat to Vikings RT Phil Loadholt.

The Patriots tried out free agent OLs Brandon Keith, Stephon Heyer, and Jamey Richard on Wednesday. Richard is a versatile interior lineman, while Keith and Heyer are tackles only. The Pats may have just been updating their "emergency" free agent list.

The Cardinals only want free agent RT Brandon Keith back "at the right price." Arizona GM Rod Graves has his hands full up front with LT Levi Brown also headed to the open market. Hampered by lower leg injuries in each of the past two seasons, Brown will have to prove he can stay healthy and effective before landing long-term security.

Cardinals placed RT Brandon Keith on injured reserve with a right ankle injury, ending his season. Keith first injured his ankle in Week 14, and aggravated it a week later before sitting out in Week 16. Poor in pass protection, Keith graded out as a slightly above average run blocker by Pro Football Focus. An impending free agent, Keith was a seventh-round pick of the Cardinals in 2008. He should be back to 100 percent health well before the beginning of camp. Jeremy Bridges will start in his absence against the Seahawks.

Cardinals RT Brandon Keith sustained a right ankle injury in Sunday's win over the 49ers. The severity of Keith's injury isn't yet known. There wouldn't be a noticeable dropoff if he were to miss next week's game against the Browns. He was replaced at right tackle by Jeremy Bridges.

Cardinals RT Brandon Keith sustained a concussion in Sunday's loss to the 49ers. Keith and Jeremy Bridges have been playing musical chairs at the right tackle spot all season anyway. There won't be a huge dropoff if Keith isn't cleared in time to play the Rams Sunday.

Cardinals RT Brandon Keith left Sunday's game with a knee injury and did not return. He and Jeremy Bridges have been taking turns losing the RT job, and are essentially below-average, interchangeable parts. Keith has been dealing with this injury for over a year, so we don't expect him to get fully healthy anytime soon.

Cardinals RT Brandon Keith was benched in favor of Jeremy Bridges during Sunday's loss to the Ravens. The Cardinals were getting eaten alive by Terrell Suggs and the Ravens, but it could have been anyone. Kevin Kolb has been sacked 24 times so far this season, second-most in the league behind Ben Roethlisberger. Coach Ken Whisenhunt admitted that a significant shakeup along the offensive line this week is possible, specifically mentioning LT Levi Brown as someone that could be benched.

Cardinals RT Brandon Keith did not return to the game after suffering a first half knee injury. Keith did some back to the sideline with his helmet, so it's very possible he simply got benched in favor of Jeremy Bridges. Beat writer Kent Somers suggests Bridges may provide more stability at right tackle going forward.

Cardinals RT Brandon Keith left Sunday's Week 4 game against the Giants with a knee injury. He was replaced by Jeremy Bridges. The two are essentially interchangeable, and both are below-average. We'll bring you an update when we find out more.