Next Man Up: A Year Behind the Lines in Today's NFL

A behind-the-scenes tour of the ups and downs of an NFL season focuses on the Baltimore Ravens and reveals the lesser-known aspects of the professional league, from the dangerous conditions under which athletes are expected to train to the unrelenting pressures faced by coaches and players.

In the NFL there is only one certainty: that every day, someone will have to be the Next Man Up. Football is an unrelentingly punishing sport, played and practiced at undiminished intensity, and it devo...