Semifinals 4 American Ninja Warrior : Season 13 Episode 9

TV-PG NBC 40m int(0)

Aired: August 23rd, 2021 @ 8:00 PM EST on NBC

The Semifinals conclude as ninjas face up to 10 obstacles. For Split Decision, ninjas must choose between an upper-body and balance obstacle. The top 2 competitors face off on the Power Tower where the winner earns a Safety Pass for the National Finals.