"From Mark Fainaru-Wada, the co-author of the controversial bestseller Game of Shadows, and Pulitzer Prize winner Steve Fainaru, comes a deep and probing look at brain injury and American football. Football (NFL)has become the most popular and most lucrative sport in America, with an inexhaustible fleet of players that get bigger, faster, and stronger every year. However, scientific evidence is beginning to make it clear that the game has taken an incredible toll on the beloved players who make it possible. Two award-winning and bestselling authors will finally reveal the truth behind the relationship between brain injury and American football. "