In court arguments before Brody in April, the NFL asked the judge to dismiss the lawsuits and send them to arbitration under terms of the players' contract. The league argued that individual teams bear the chief responsibility for health and safety under the collective bargaining agreement, along with the players' union and the players themselves.
But the players' lawyers accused the NFL of concealing for decades studies linking concussions to neurological problems.
Dorsett said each day is getting harder for him, as he struggles with memory problems.
"It's frustrating. Frustrating. And to have a 10-year old daughter who says to her mother, 'Daddy can't do this because Daddy won't remember how to do it,' it's not a good feeling," he said. "I'm glad to see there's been ... acknowledgment that football has had something to do with a lot of the issues us players are going through right now."
In recent years, a string of former NFL players and other athletes who suffered concussions have been diagnosed after their deaths with CTE, including both Seau and Easterling. More than 4,500 former players eventually joined the litigation. The number of claims, including spouses and survivors, could top 20,000, the NFL said.
While some of those who sued suffered brain ailments, others were worried about future problems and wanted their health monitored.
The lawsuits and a growing awareness that concussions — once routinely laughed off by football players as "Getting your bell rung" — can have serious long-term effects have already spurred research into better helmets and changed the way the game is played.
The NFL has instituted rule changes designed to eliminate hits to the head and neck, protect defenseless players, and prevent athletes who have had concussions from playing or practicing until they are fully recovered. Independent neurologists must be consulted before a player can return to action.
One key rule change that takes effect this season bars ball carriers from using the crown of the helmet to make contact with defenders.