Season 1, Episode 4 American Ninja Warrior

First Aired: December 12, 2009

Part 4 of 8. The semifinal round challenges the first half of the qualified American competitors.

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  • Premiered: December 12, 2009
  • Rating: TV-PG
  • User Rating:4.14 out of 5 (111 ratings)
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  • Premise: A "Ninja Warrior" spin-off in which athletes tackle an array of challenging obstacle courses in hopes of advancing to the national finals in Las Vegas, where the winner walks away with a $1 million. (more)

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