Pro Football Focus studied how quarterbacks performed when under pressure over the past five seasons, finding that Aaron Rodgers, Russell Wilson, Peyton Manning, Ryan Tannehill and Robert Griffin III scored the best.

JaMarcus Russell, Brett Favre, Sam Bradford, Matthew Stafford and Donovan McNabb were the worst when under pressure.

The Seattle Seahawks have accounted for 10 percent of the NFL's 50 PED suspensions since 2010.

Bruce Irvin was the most recent member of the Seahawks to receive a suspension.

Kam Chancellor and other veteran Seahawks called a team meeting to discuss the issue.

"We had our meeting. The vets put a meeting together to talk to the guys about not making the same mistakes over and over," Chancellor said. "You know, we gotta grow up and move past that. So that's pretty much the message right now -- growing up and not making the same mistakes over and over."

Seneca Wallace was out of the NFL last season, but is competing for a backup job with the New Orleans Saints.

"It was refreshing because it was the first time I had been away from football in a long period of time so I can kind of sit back and look from the outside looking in and see how football was," Wallace said on Thursday.

Wallace has primarily been a backup during his nine NFL seasons between the Seattle Seahawks and Cleveland Browns.

Marshawn Lynch was the only healthy member of the Seattle Seahawks not to attend this week's OTA practice.

“He’s working in a very intense program in his area and he’s benefiting from it,” Pete Carroll said.

Lynch appears to be in great shape and visited the Seahawks within the past two weeks.

The Seattle Seahawks lead the NFL in suspensions for performance enhancing drugs since Pete Carroll became head coach in 2010.

Bruce Irvin became the fifth member of the Seahawks to receive a suspension on Friday.

The total does not include the overturned four-game ban for Richard Sherman at the end of last season.

The Denver Broncos and New York Giants have received four suspensions apiece.

The San Francisco 49ers are amongst 10 teams to have zero suspensions.

Bruce Irvin has been suspended for four games for violating the NFL's performance-enhancing substance policy.

Irvin will miss games against the Panthers, 49ers, Jaguars and Texans.

"I want to apologize to my teammates, coaches and Seahawks fans for making a mistake when I took a substance that is prohibited in the NFL without a medical exemption," Irvin said in a statement.