Tyler Sash had chronic traumatic encephalopathy before he passed away in September of an accidental overdose.

Sash was cut by the New York Giants in 2013 after suffering at least his fifth concussion.

Sash had returned to Iowa and increasingly displayed irregular behavior, family members said this week.

Sash had bouts of confusion, memory loss and minor fits of temper. 

Barnetta Sash, Tyler’s mother, blamed much of her son’s behavior on the powerful prescription drugs he was taking for a football-related shoulder injury that needed surgery. 

Doctors grade C.T.E. on a severity scale from 0 to 4; Sash was at stage 2.

Junior Seau was found to have a similar amount of CTE in his brain after he committed suicide in 2012 at the age of 43.

“My son knew something was wrong but he couldn’t express it,” Barnetta Sash said Monday night. “He was such a good person, and it’s sad that he struggled so with this – not knowing where to go with it.”

She continued: “Now it makes sense. The part of the brain that controls impulses, decision-making and reasoning was damaged badly.”

The New York Giants and Ben McAdoo have reached agreement for him to remain with the team as head coach.

McAdoo has been offensive coordinator of the Giants over the past two years after serving as quarterbacks coach of the Green Bay Packers in the 2012 and 2013 season. McAdoo had been tight ends coach of the Packers in 2006.

The Giants fired Tom Coughlin this offseason.

Jeff McLane reports the Philadelphia Eagles were prepared to offer their job to McAdoo.

The San Francisco 49ers have requested and received permission to interview Tom Coughlin.

Coughlin was fired by the New York Giants at the end of the season.

The Philadelphia Eagles also have interest in Coughlin.

The 49ers are searching for a replacement for Jim Tomsula while Hue Jackson has been considered the favorite.

Mike Smith will interview with the New York Giants on Monday.

Smith has been out of football since being fired by the Atlanta Falcons in 2014.

The Philadelphia Eagles have requested permission to interview Tom Coughlin for their head coaching vacancy.

Coughlin stepped down as head coach of the New York Giants, so permission needs to be granted.

The Giants will not stand in Coughlin's way of interviewing.

Coughlin acknowledged Tuesday that he would be open to coaching again after 12 years with the Giants. 

The Philadelphia Eagles are interviewing Ben McAdoo for their head coaching vacancy. The interview is said to have gone "very well."

McAdoo spent the past two seasons as offensive coordinator of the New York Giants.

The Eagles are searching for a replacement for Chip Kelly.

McAdoo is also a candidate for the New York Giants' job.

Tom Coughlin and the New York Giants parted ways after 12 seasons but he says he may not be done with coaching.

"Not necessarily," Coughlin said when asked if his passion for coaching has been extinguished.

Coughlin was asked specifically if he would coach next year if the right opportunity came along despite being 69 years old.

"I didn't say that, I just said I'm not necessarily done with coaching," he said. "Thank you very much for asking."

The Giants know that Coughlin is still an extremely valuable scout with loads of institutional knowledge, and would potentially like him to come back in an advisory role on the personnel side.

"When (co-owner Steve Tisch) and I talked to him yesterday, I asked him if he would consider staying on in some capacity," Giants co-owner John Mara said. "I don't want to let all that knowledge walk out the door. I asked him to think about it over the next few days, ways that he might be able to help us going forward.

"He agreed to do that and I don't think either one of us have an idea yet exactly what form that might take. But let's face it, he brings a unique perspective. He knows our team as well as anybody, he knows the league as well as anybody, and there may be some capacity in which he could help. This is not a situation where we wanted to see him walk out the door. We want him to stay involved because of everything he's brought to this organization and everything he could still possibly do at some point in the future."

The Seattle Seahawks finished the 2015 season ranked first in Football Outsiders' Total DVOA following their blowout victory of the Arizona Cardinals.

The Seahawks have now finished first in DVOA for four straight seasons, which is the first time the feat has been accomplished.

The Cincinnati Bengals rank second in Total DVOA ahead of the Cardinals, Carolina Panthers and Kansas City Chiefs.

These were also the five teams, the Seahawks, Bengals, Cardinals, Panthers and Chiefs, to finish the 2015 regular season in the top-10 in both Offensive and Defensive DVOA.

The New York Giants, San Francisco 49ers, Cleveland Browns and Tennessee Titans are interested in Chip Kelly.

Kelly was fired last week by the Philadelphia Eagles.

Tom Coughlin and the Giants parted ways on Monday. The Giants would offer Kelly the opportunity to remain in the NFC East.

Tom Coughlin and the New York Giants have parted ways.

The departure is officially worded as Coughlin stepping down.

Coughlin won two Super Bowls with the Giants.

Coughlin became head coach of the Giants in 2004, replacing Jim Fassel, which was also Eli Manning's rookie season.

The Giants haven't reached the playoffs since 2011 when they won Coughlin's second Super Bowl.