D.J. Hayden was released from the hospital on Wednesday following surgery to remove scar tissue as a result of last November's heart surgery.

Hayden underwent emergency surgery due to a severe injury to his heart.

Hayden's doctor has stated this scar tissue is not a lingering issue of the injury but rather a result of the surgery and is rather common. 

Hayden was the 12th overall pick in the 2013 NFL Draft by the Oakland Raiders.

Charles Woodson has signed with the Oakland Raiders on a one-year contract.

Woodson's deal is worth a maximum of $4.3 million and includes a $700,000 signing bonus.

Woodson played with the Raiders from 1998 until 2005 when he signed with the Green Bay Packers.

Woodson had met with the San Francisco 49ers and Denver Broncos, but ultimately decided to join the rebuilding Raiders.

Charles Woodson has been invited to meet with the Oakland Raiders on Tuesday.

Woodson has also been pursued by the Denver Broncos, Carolina Panthers and New York Giants.

Woodson began his career with the Raiders before signing with the Green Bay Packers in free agency.

The Oakland Raiders have signed Chris Kluwe to a one-year deal.

Kluwe will replace Shane Lechler at punter, who signed with the Houston Texans this offseason.

“I’m excited to be an Oakland Raider and be playing in California,” Kluwe said.

Kluwe also received interest fromthe Cleveland Browns.

Kluwe has been a vocal proponent of marriage equality.

“I’m still going to be myself socially and continue to tweet and interact with my fans,” Kluwe said.

Josh Cribbs has signed with the Oakland Raiders.

Cribbs spent eight seasons with the Cleveland Browns as one of the NFL's most explosive kick and punt returners.

Rolando McClain is retiring from the NFL approximately one month after signing a one-year deal with the Baltimore Ravens.

McClain was a first round pick by the Oakland Raiders in 2009.

McClain was arrested 10 days after signing with the Ravens in April.

McClain has been arrested several times since entering the NFL out of Alabama.

“Rolando let me know that he plans to retire from the NFL,” Ozzie Newsome said. “We have placed him on the Reserve/Retired list.”

The Ravens lose one inside linebacker from their depth chart in McClain, though they did draft Arthur Brown at the position in the second round last month.

The Oakland Raiders have turned over a sizable portion of their linebacker corps with many of them playing on the outside.

But the Raiders are going to continue featuring the 4-3 as their base.

"We're basing out of a 4-3, just like we did last year," Dennis Allen said Saturday. "But we're going to have the ability to have some 3-4 looks, and being able to implement those things and try to make them as simple as we can for our players, as well as try to make it complicated for the offense."

The Raiders may ultimately play the 4-3 on obvious running downs and then switch to 3-4 on passing downs.

Tyler Wilson looked very impressive in practice with the Oakland Raiders on Saturday.

Wilson exhibited arm strength and accuracy in a variety of different passes.

“Obviously, picking up a new system, there’s a little bit of rust there,” Dennis Allen said of Wilson. “But throwing the ball, he’s done a nice job. I don’t have any question about his arm strength and his accuracy.”

Matt Flynn and Terrelle Pryor are also vying for the Raiders' starting job as quarterback.

“It’s an opportunity,” Wilson said after practice. “Obviously, there’s a lot I have to learn. … I’ve got a lot of work to do to get up to speed because there have been veteran guys that have been here that are way ahead of me right now. So, I’m playing catch-up from that point.”

Amy Trask has stepped down as CEO of the Oakland Raiders.

“Earlier today, I informed Mark Davis of my decision to leave the Raiders,” Trask said via e-mail. “Having honored a commitment that I made to effectuate a smooth transition and transfer of control, I no longer wish to remain with the organization.

“For over a quarter of a century, it was my honor and my privilege to work for the Raiders. I will forever appreciate the opportunity afforded me by Al Davis.”

Trask has long been the highest ranking female executive in professional sports.

Trask is yet another longtime employee of the Raiders that has left the organization since the passing of Al Davis in 2011.

D.J. Hayden practiced through a sore hamstring on Saturday and broke up several passes.

Hayden was the 12th overall pick in the 2013 NFL Draft by the Oakland Raiders.

“Oh, man, it felt so great just to get back out there, put the helmet back on and just actually be on the field,” said Hayden.

Hayden had a near brush with death last November when he suffered a ruptured vein that feeds blood from his lower body to his heart in a practice.

“I don’t even think about it,” Hayden said of the injury in which a teammate’s knee drilled him in the midsection while defending a pass over the middle. “The only time I think about is when somebody asks me. But when I’m on the field, I don’t think about that. I think about the play and about the coverage that I’m in. I put it past me.”