The NFL concussion litigation is set to heat up again early next month, days before the regular season gets underway. More than 4,000 former players are suing the league over claims the NFL hid known concussion risks, leading to high rates of dementia, depression and even suicides. Some believe the players' claims could be worth $1 billion or more if they move forward in court. They range from the deaths of players like Junior Seau, Dave Duerson and lead plaintiff Ray Easterling to the medical care of players with disabling dementia to lifelong medical monitoring for those who are now symptom-free. Former Green Bay Packers running back Dorsey Levens, after oral arguments in the case in April, said he signed on to the litigation on behalf of "all the nameless, faceless guys that are suffering that you never heard of, ... and people who have lost their lives, and the guys who are playing now, who are not really aware of the long-term ramifications of all these repeated head blows."