When Jen Welter became a linebackers coach for the Arizona Cardinals in 2015, she was the first woman to ever break the glass sideline of the NFL, but it wasn't her first time pioneering as a woman in football: Welter was also the first woman to play running back in a men's professional football league. In Play Big, Welter reveals the grit and determination that it took to be a trailblazer in one of the country's toughest boys' clubs.

With reliability and encouragement, Play Big lays out how she handled the unique pressure of being the only woman in a notoriously sexist environment. By detailing her own strategies for succeeding despite the odds, Welter gives readers the tools they need to do the same, whatever their own obstacles might be.

Drawing on a move that garnered attention during her time with the Cardinals--writing personal motivational notes for each of her linebackers the night before a game--Welter translates simple but effective tips for perseverance and toughness in Play Big.