Dwayne Johnson has revealed the elite group of six world-renowned athletes to compete in NBC’s “The Titan Games.” Two-time Olympic gold-medal winning and current undisputed boxing world champion Claressa Shields, NFL Iron Man Legend and 10x Pro-Bowler Joe Thomas, Super Bowl champion Victor Cruz, Olympic gold-medal winning snowboarder Hannah Teter, professional stunt woman and star “American Ninja Warrior” Jessie Graff, and five-time UFC champion Tyron Woodley have all accepted the challenge to join the competition.