New York Times bestselling authors Joshua Robinson and Jonathan Clegg turn their sharp reporting and propulsive writing to the NFL, going inside the most influential and successful teams?including the Eagles, the Ravens, and the Rams?and showing what it takes to build winning teams in the most competitive, brutal sports league in the world.

The NFL is the toughest league in the world in which to build a winner?and it's not particularly close. Between the hard salary cap, constant rule changes, comprehensive revenue redistribution, and constraining player contracts, the league engineers parity with draconian efficiency. It punishes winners, elevates losers, and goes out of its way to prevent dynasties. By the laws of the NFL, this hard road to the top is a feature, not a bug.

And yet, in the face of these intense obstacles, some teams have learned how to thrive, year after year. How does this happen? What separates the champions from the Sunday-afternoon chaff? Talent on the field and on the sidelines helps, but as Joshua Robinson and Jonathan Clegg reveal the modern NFL is not won through Xs and Os alone. Instead there is a new calculus of winning in the world's most lucrative sports league. The teams that triumph exploit a range of loopholes from contract strategy to draft savvy to proprietary metrics, finding ways to extract ruthless efficiencies from a system built to strip away every advantage.

Going inside the front offices and locker rooms of the most influential and forward-looking teams in today's NFL?from the Eagles to the Ravens to the Rams?Robinson and Clegg show the franchises that are using the NFL's rigid system to their own advantage, examining how they are drafting creatively, winning differently?and how the rest of league has yet to catch up. The result is a fascinating window into achieving success in the modern NFL and an unparalleled look at how the cunning it takes to win on the field starts in the most surprising of places.