Professional athletes love to compete. In fact, they do it for a living. That's what makes them professionals.
Their competitive streaks aren't limited to their sport of profession, however. In fact, many pro athletes are ultra-competitive at everything they do.
The two squared of in the first-ever Vine Olympics, organized and hosted by the MLS social media team. There was a game of hand slaps, paper-rock-scissors, thumb war and more.
And in the end, there was only one champion.