1. Georges St. Pierre
Mixed martial arts master Georges St. Pierre is ranked ranked as the No. 1 Welterweight fighter by many publications and with reason: he’s won 22 out of the 24 UFC fights he’s participated in.
2. LeBron James
Not only is “King James” one of the most famous basketball players of the 21st century, his skills also earned him the title of NBA’s Most Valuable Player two years in a row.
3. Cristiano Ronaldo
Ronaldo is as well known for his incredible skill on the field as his hunky good looks but it’s his stamina and precision that would make him succeed on the American Ninja Warrior courses.
4. Rafael Nadal
He may have been temporarily dethroned from his spot as the World’s #1 Tennis Player but Rafael Nadal remains the “King of the Clay” in our eyes.
5. Larry Fitzgerald
Arizona Cardinals wide receiver Larry Fitzgerald has been called “The Best Hands in the NFL” for years and if he looks especially familiar, it might be because he’s appeared on several video game package covers throughout his career.
6. Brian Wilson
San Francisco Giants’ Brian Wilson helped his team win the World Series in 2010 and there’s no doubt in our mind that his fierce competitive spirit (and his beard) would come in handy in the hardest of obstacles.
7. Manny Pacquiao
Beloved boxer Manny Pacquiao has won six world titles in his career and has been named the best boxer of his decade. He’s also been in the army and is active in politics in his native country of The Philippines, further confirming that he is not one to mess with.
8. Serena Williams
Serena has been playing Tennis professionally since the age of 13 and has been ranked number one in the world by the Women’s Tennis Association several times. Her upper body strength alone would get her far in the competition.
9. Tim Tebow
America’s most talked about quarterback made headlines and punchlines last year for both his strong beliefs and his strength in the game which would undoubtedly help him conquer even the hardest obstacles.
10. Lance Armstrong
Lance Armstrong won seven Tour de France races in a row and beat cancer. At this point, we think he might be invincible.