ALAMEDA -- Dennis Allen wasn't interested in hashing over the details Monday of a 23-19 loss to the Tennessee Titans given the time constraints of a Thanksgiving Day game in Dallas against the Cowboys.
"We don't have a lot of time to sit around and wallow in self-pity," Allen said at his weekly news conference. "We've got a game to play ... and that's really where the majority of our focus has turned to now."
The Raiders got an early start working on Dallas, putting off practice until Monday night under portable lights and having a walk-through practice session.
There was good news on the injury front in a short week, with tight end Mychal Rivera saying he had completed the entire NFL concussion protocol and would be playing against Dallas.
Running back Darren McFadden (hamstring) also was available at practice and said he hopes to play, and left tackle Jared Veldheer (triceps) is on target to come off the injured reserve/designated for return list and make his 2013 debut.
"Getting guys physically rested and healthy is a challenge, and then we're cramming all of our preparation into about a 21/2-day window whereas normally you're going to have four days to really get prepared for a game," Allen said.
The only players who did not participate in the Monday walk-through were wide receiver Denarius Moore (shoulder), safety Tyvon Branch (ankle) and defensive end Jason Hunter (foot).
Cornerback Mike Jenkins, who also had a concussion, was on the field, but it is not known if he has been cleared to play.
Rivera's being cleared comes as pleasant news considering the head shot he took from Michael Griffin. The hit knocked Rivera's helmet off, and his head then hit the ground.
"(I) went home and felt good, normal. Woke up this morning feeling normal," Rivera said. "Saw the neurologist today, talked to a lot of doctors, and they fully cleared me."
Rivera said he received a text from Griffin, who relayed that the hit wasn't malicious and that he was just doing his job.
"I really respected that from him," Rivera said. "I hit him back and told him I respected he was just doing his job and I said we'd see each other again in the future."
McFadden could be used to spell Rashad Jennings, who had 122 yards from scrimmage (73 rushing, 49 receiving) against Tennessee and has 553 yards rushing and receiving in his last four games.
"To me, I could have been back last week, but I have to take my time with it," McFadden said. "I know if I rush it, this time it will probably be over for the season."
After making 49 of his previous 50 attempts from under 50 yards coming into the season, he is 11 of 15 this season.
Raiders (4-7) at Dallas (6-5), 1:30 p.m. CBS