Langston

Walker

Walker, 30, can play right and left tackle, but will be tried on the strong side for Oakland, which is dealing with RT Cornell Green’s calf injury. Walker lacks good mobility, however, and fits the zone-blocking scheme poorly.

Walker is stepping in after Chris Morris’ play last week wasn’t as good as coach Tom Cable had hoped. Walker (6'8/365) may be the biggest zone-blocking left guard ever. He tried the guard spot two weeks ago when Robert Gallery was lost for the season, but, apparently, it was too “hilarious,” so the Raiders went with Morris. Charlie Frye won’t be laughing come Sunday.

Third-stringer Chris Morris replaced him to the tune of a false start, a holding penalty, and a batted down pass the rest of the way.

Third-stringer Chris Morris will start in his place. Charlie Frye could be in for a long afternoon.

Charlie Frye is facing an uphill battle without Walker and Fargas.

Trainers examined his head after he needed time to get off the field, which could indicate a concussion. Tackle Chad Slaughter replaced him; Walker did not return.

McQuistan practiced with the starters in pregame drills Sunday, but Walker started. Walker’s subsequent poor performance just may open the door for McQuistan.

Walker is not expected to miss any additional time.

He left during the first quarter of his game against the Broncos and did not return. Reserve Chad Slaughter replaced him and was called for four false starts.

Walker’s status is unknown at this point. His direct backup is guard Brad Badger with Chad Slaughter starting for injured Robert Gallery.