SPOILER For the first time in history, a woman has conquered Stage 1 on American Ninja Warrior

Jessie Graff speeds up the Warped Wall and through the Flying Squirrel at the National Finals in Las Vegas, becoming the first woman ever to hit that buzzer for Stage 1. SUBSCRIBE: Watch more from Esquire Network: Find Esquire Network on TV in your area: About American Ninja Warrior: Esquire Network brings you the heartracing competition series, American Ninja Warrior, with hosts Matt Iseman, former NFL player Akbar Gbajabiamila, and coh