The underdog Internationals bared their teeth on Saturday, outplaying the United States in a marathon day of golf to leave American fans stunned and the Presidents Cup suddenly up for grabs.

The heavily favored U.S. team had started the day with a commanding 8-2 advantage and in position to register a Presidents Cup first — securing the golden trophy on Saturday.

But the Americans took their foot of the gas, opening the door for the scrappy International team, which split the morning foursomes 2-2 and then took three of four points in the afternoon fourballs to chop the U.S. advantage to 11-7.