"Rivals" takes the competition and the drama to a new level this season as each team is comprised of two people who are known enemies. The explosive premiere kicks off with a challenge that sends the rivals flying – right over a waterfall. But the big surprise is who wins day one. And later, as tempers flare, one challenger is sent packing.

This season, with TJ Lavin as returning host, "The Challenge: Rivals" takes 14 men and 14 women out of their comfort zone to the exotic Costa Rica for a brand new game and a brand new team structure. Like every challenge, "RIVALS" will require strength, stamina, and perseverance. But more than ever before it's going to require mental toughness —because in a new twist each two-person team will be made up of a pair of bitter rivals who will have to depend on each other to win the ultimate prize - $300,000 cash.

Watch as rivalries become stronger, friendships are formed, and relationships are put to the ultimate test. Will CT, who previously punched Adam in the face, be able to convince Adam put it behind them to win the cash? Will Paula and Eve put their mutual distaste for each other aside, and will loudmouth Kenny be able hold back the insults usually aimed at his enemy Wes, in order to put together a winning strategy?

Meet the "Rivals" Teams:

• Adam Royer and Leroy Garrett- The Real World 25: Las Vegas

• Kenny Santucci (The Challenge: Fresh Meat) and Wes Bergmann (The Real World: Austin)

• Evan Starkman ( The Challenge: Fresh Meat) and Nehemiah Clark (The Real World: Austin)

• Tyler Duckworth and Johnny Devenanzio- The Real World: Key West

• Davis Mallory and Tyrie Brown – The Real World: Denver

• Brandon Nelson(The Challenge: Fresh Meat II) and Ty Ruff (The Real World: D.C)

• CT Tamburello and Adam King- The Real World: Paris

• Cara Maria Sorbello and Laurel Stucky- The Challenge: Fresh Meat II

• Mandi Moyer (The Challenge: Fresh Meat II) and Jenn Grijalva ( The Real World: Denver)

• Evelyn Smith ( The Challenge: Fresh Meat) and Paula Meronek ( The Real World: Key West)

• Sarah Rice and Katelynn Cusanelli- The Real World: Brooklyn

• Jasmine Reynaud and Jonna Mannion- The Real World: Cancun

• Theresa Gonzalez (The Challenge: Fresh Meat II) and Camila Nakagawa ( Spring Break Challenge)

• Aneesa Ferreira (The Real World: Chicago) and Robin Hibbard ( The Real World: San Diego)