The untold story of John Madden's astonishing second act?and how the coach, broadcaster, and video-game icon transformed the NFL while confronting the damage football could do.

John Madden retired abruptly from coaching in 1979, five months after receiver Darryl Stingley suffered a paralyzing injury against his Raiders. The tragedy would never leave him. He had no intention of entering broadcasting. Yet, within a decade?BAM!?he had become the most recognizable voice in football and a driving force behind America's most powerful sports league.

Veteran sports journalist Scott HowardCooper reveals how Madden recast himself at exactly the right moment. Television was transforming sports, and the NFL needed a translator to turn complex strategy into entertainment. Madden didn't just analyze football; he redefined how it was watched and loved?from the telestrator and pregame film study to Thanksgiving football.

But BAM! goes beyond the booth, tracing Madden's personal life, unguarded moments, unexpected turns, and his influence through advertising, network wars, labor battles, concussion debates, and the Madden NFL video game?which reshaped gaming and brought football to new generations. Yet, Madden could never entirely escape what the game demanded from the men who played it.

BAM! is the story of how one rumpled, affable man became a defining figure in football's greatest boom?and its reckoning ?and why the NFL cannot stop invoking his name.