Sean Gregory

Sean Gregory is a TIME staff writer who has covered sports extensively over the last decade. He has penned profiles on athletes ranging from LeBron James, Novak Djokovic, Usain Bolt and Eli Manning, and explored issue like football's concussion crisis, and the treatment of young baseball players in the Dominican Republic. Sean has covered the the last four Olympic Games, and filed dispatches from Super Bowls, the NBA Finals, and the World Series for TIME. A native of the Bronx, N.Y., Sean enjoys firing lots of shots in pickup basketball games.

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Why Leather Football Helmets Could Provide a Better Defense Against Concussion

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If we want to cut down on football concussions, should we bring back the leather helmet? Not quite, says a new study in the Journal of Neurosurgery, though the noggin-protectors of yore do at least as good of a job as modern helmets at staving off concussions.

Tracing an Infectious Virus Through the NBA

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If, or when, the NBA season does resume after the lockout, teams will have to address another important off-the-court issue: infectious illness.

Former Hockey Star Rick Martin Had Disease Linked to Head Trauma

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Over the past couple of years, two hockey “enforcers” — players whose primary job is to slug opponents on the ice — have been diagnosed with chronic traumatic encephalopathy (CTE), a degenerative brain disease found in victims who have suffered repeated blows to the head. Now, alarming new research reveals that you don’t have to [...]

Study Ranks 10 Football Helmets for Concussion Safety

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No magic football helmet can prevent players from sustaining concussions. But thanks to new research out of Virginia Tech, football players, and their parents, now know which equipment could reduce the risks.

To Live Longer, Granny, Get Your Fanny to the Mall

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Feel like living longer? Grab a shopping cart.

Study: Boys, Girls Suffer Different Concussion Symptoms

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The next time you see a girl soccer player yawning on the sidelines, don’t just assume she was up late the night before the game. She might have a serious concussion.