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Derek Boogaard's family has filed a wrongful-death lawsuit against the National Hockey League.

Thomas Jones, a retired running back who played for five teams in 12 NFL seasons, has decided to donate his brain to the Sports Legacy Institute to be studied for evidence of chronic traumatic encephalopathy (CTE).

Trying to understand tragic deaths and failing. Considering the nature of violence and human nature. About guilt and complicity. Thinking, in the wake of Jovan and Kasandra, how we struggle with the truth of things.

The forensic pathologist who first identified chronic brain damage as a factor in the deaths of some NFL players flew to San Diego on Thursday to participate in the autopsy of Junior Seau, two sources with knowledge of the case told ESPN.com.

The family and friends of the late NFL star Dave Duerson have begun a program to help high school and middle school athletes in his hometown of Muncie who suffer head injuries.

Here's a look at the numbers behind some of the biggest sports stories this past month. Send us suggestions for next month's edition by tweeting at @michaelkruse with the hashtag #GrantlandStats. Amount of Prince Fielder's nine-year contract w...

Lew Carpenter never had any concussions -- or at least none that his family knew about back in the 1950s and '60s, when he played for the Lions, Browns and Packers and there wasn't as much concern over them as there is now.

Rangers enforcer Derek Boogaard suffered from chronic traumatic encephalopathy, a degenerative brain ailment related to Alzheimer's disease that is caused by repeated blows to the head, the New York Times reported.

The researchers studying a degenerative brain disease in former athletes plan to test about 100 retired NFL players to try to learn how to diagnose the condition during life.

Researchers studying the brain of seven-time All-Star Rick Martin have found damage consistent with the trauma they found in other former NHL players.

Two members of the San Francisco 49ers' famed "Million Dollar Backfield" who died within months of each other this year will have their brains examined by researchers at Boston University that are studying head injuries in sports.

This week, Boston University researchers confirmed publicly that former Chicago Bears safety Dave Duerson suffered from a form of brain damage -- chronic traumatic encephalopathy -- found recently in about two dozen other deceased former pro football...

CHICAGO -- There was mixed reaction, at least from a couple of the Chicago Blackhawks' tough guys, to the news that former Hawks enforcer Bob Probert had Chronic Traumatic Encephalopathy. CTE, as it's commonly referred to, is a progressive brain d...

There was mixed reaction, at least from a couple of the Chicago Blackhawks' tough guys, to the news that former Hawks enforcer Bob Probert had Chronic Traumatic Encephalopathy.

Two newspapers are reporting researchers at Boston University have found a degenerative disease in brain tissue donated by former NHL enforcer Bob Probert.

The football world was stunned by Dave Duerson's suicide. espnW's Amanda Rykoff says stories such as Duerson's and others before him must force the players and the NFL to take a closer look at traumatic brain injuries and address it in the newest CBA.