Former-Dallas Cowboys and Denver Broncos quarterback Craig Morton has sued the NFL for failing to disclose the true danger of concussions caused by hits to the head.
According to the New York Times, Morton filed a federal lawsuit this week in northern California against the National Football League.
Morton - who played quarterback for the Cowboys between 1965 and 1974 and then for the New York Giants and Denver Broncos - accuses the NFL of concealing information that pointed towards the harmful effects of head hits and concussions.
In August earlier this year, the NFL settled a lawsuit with more than 4,000 former-NFL players regarding concussions. The league has put together a $765m fund to pay the players, but has not taken responsibility for their injuries.
Morton's frustration at the ruling has led to ex-Broncos star to file his own 84-page lawsuit - and the report claims it could lead others to drop out of the settlement and pursue their cases on an individual basis.
Morton won Super Bowl VI with the Dallas Cowboys, although he was back-up to starting quarterback Roger Staubach.
Concussions and hits to the head became a hot topic over the summer, with the NFL introducing new rules regarding the dangerous tackles to the area above the shoulders.
A report by the Associated Press revealed of 549 penalties reviewed through the first 162 games of the season, 156 were related to contact to the head or neck area.
That is an average of almost 0.962 per game, with quarterbacks the most heavily affected.