American Ninja Warrior

The qualifying rounds begin in L.A., with ninjas from across the country taking on the world's most challenging obstacle course.

New obstacle Kite Surfer makes its debut, and the final spot in the semifinals for each round will be determined by head-to-head runoff races.

New obstacle The Cubes makes its debut, and the final spot in the semifinals for each round will be determined by all-new head-to-head runoff races.

The qualifying rounds continue in L.A. with ninjas from across the country taking on the world's most challenging obstacle course.

Competitors as young as 15 return to take on veterans and will have a chance to face a taller Mega Warped Wall.