The Challenge 2010 | TV Show Watchlist

Season 21, Episode 1 Welcome to the Jungle

First Aired: June 22, 2011

In the Season 21 opener, 28 "Challenge" alums arrive in Costa Rica and learn they'll be teamed up with their biggest rivals. It doesn't take long for old tensions to resurface, and a fight on the second night sends one player home early.

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