At a World Rock, Paper, Scissors Championships at a nightclub in downtown Toronto, the favorite childhood game has become a sport. The 320 competitors call themselves professional athletes and wear glitzy costumes Some even bring along team doctors and nutritionists care for their physical well-being and take them through intense warmups. Some international contestants flew in from far away places like London, England to participate in the spectacle.

Toronto's own Rob Krueger, was the winner and netted $3,825. He's a member of the "Legion of the Red Fist" team. He gained the title of World RPS Champion with a combination of rock-paper-paper, defeating his opponent's three rocks. The event drew a crowd of about 900, including a slew of local and international media.

To the uninitiated onlooker, taking the playground game seriously may seem difficult. Many competitors wore homemade costumes, and played with a can of beer in the hand they weren't using for the game.