NAPA -- The jersey color needs some work, but Raiders cornerback D.J. Hayden was happy simply to be on the field with his teammates Friday.
"If I've got to have a red jersey on, that's what it is," Hayden said after the Raiders' first practice of training camp. "I'm cool with it."
Red jerseys are worn by quarterbacks and kickers as a symbol of being off-limits in terms of contact. Coach Dennis Allen said he wasn't sure how long the Raiders' first-round draft pick would be in red.
It was a minor surprise Hayden was on the field at all, considering he was placed on the non-football injury list Thursday after signing a contract reported at four years with a $5.88 million signing bonus.
Hayden was cleared by the medical staff Friday morning, but the Raiders will take their time with a player who underwent major surgery in November for a ruptured blood vessel leading to his heart and then had a related abdominal procedure to remove scar tissue in late May.
"It's been nine, 10 months since he's actually really played football," Allen said. "We're not just going to throw him in to the fire right away."
Hayden shrugged off the May abdominal surgery, saying, "It was hurting and was something I needed to get taken care of. Stuff happens all the time. I just had to deal with it, and I'm here now."
Hayden's work in limited reps was mostly with the second team, with Tracy Porter and Mike Jenkins working with the first team.
As the No. 12 pick in the draft, and a player general manager Reggie McKenzie said he would have taken at No. 3 had the Raiders not traded down, the reasonable expectation would be for Hayden to be an immediate starter.
The recovery from two surgeries could change that, and the former University of Houston star said he'll do whatever is asked of him.
"Whatever the coaches decide is best for the team, then I'm cool with it," Hayden said. "I just want to go out there and just be me."
With Flynn working with the first team, Terrelle Pryor with the second and rookie Tyler Wilson with the third team, the three quarterbacks got an equal amount of snaps.
"I think Matt made some nice reads and made some really nice throws," Allen said.
Pryor was hit and miss, while Wilson had one horrendous sequence with three interceptions in four throws.
"It feels great. I feel like I'm a downhill runner, and that's something the coaches see also," McFadden said.
"When I look at the way we move around, I think we're going to be a fast-flowing defense," Woodson said. "I think that if you can have that on any team -- a team that's willing to sell out every play and get to the ball -- you're going to be in ballgames."
Allen had no timetable for their return.
The Raiders opened camp with Lucas Nix as the starting left guard, with Tony Bergstrom running with the second team. Mike Brisiel is currently the starter on the right side.