For many boxers, once the punches stop, the real fight starts.

As concussions plague football, are there lessons from earlier concerns about boxing?

The drama of modern free agency has become as much a part of professional sports as the games themselves. But it wasn’t always that way. Today’s free agents owe a big debt of gratitude to Curt Flood.

When N.F.L. players, starting with Colin Kaepernick, took a knee during the National Anthem to protest they ignited an uproar over injecting politics onto the playing field.

After the 1998 NFL draft produced one of the greatest busts in history, what have we learned about the science of evaluating human talent – on and off the field?

As America’s jazz icon, Louis Armstrong was seen as a smiling, easygoing entertainer. But in 1957, he invited controversy by speaking forcefully on behalf of his fellow African Americans, putting him in a position familiar to many Black athletes today.

NFL players have been derided for injecting politics into the country’s favorite sport. But, when convenient, America has also celebrated black athletes for acting as political emissaries.

He’s been called the most dangerous man in football. Not for what he’s doing on the field – but what he’s saying off of it. A new series of original Retro Report short docs produced for Facebook.