Presidents Cup players rub Phil Mickelson's belly for good luck

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The United States has a slight edge going into the final day of the Presidents Cup in South Korea.

Sure, world No. 1 Jordan Spieth may have something to do with it, making two clutch putts in morning foursomes and eight birdies in 14 holes in a fourballs victory in the afternoon to rally the American troops.

Or it could be Phil Mickelson's belly.

Players left and right could be seen Friday taking rubs of Lefty's tummy, Buddha-style, for good luck.

Whatever works.