Watch Europe have their first loss in the Ryder Cup

It's only the practice rounds and the Americans are already celebrating.

Justin Rose was unbeaten in the last Ryder Cup at Gleneagles, but the Olympic champion has already tasted defeat at Hazeltine - to an American spectator.

After Andy Sullivan and Rory McIlroy had failed to make a putt on the eighth green during Thursday's practice round, David Johnson from North Dakota shouted that he could make it from around 12 feet.

Has the @rydercup started already??🇪🇺🇺🇸 pic.twitter.com/s6EImcbnZv

— Rory McIlroy (@McIlroyRory) September 29, 2016

Rose and Henrik Stenson, the other two European players in the group, decided to call the man's bluff and brought him out of the crowd, with Rose even betting him $100 that he would miss.

However, after Rose placed the $100 bill on the green, Johnson promptly holed the putt to spark wild celebrations and earn himself high-fives and hugs from the European quartet.