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LA QUINTA, CA - JANUARY 22: Phil Mickelson of the U.S. holes out of the fourth green trap to make birdie during round one of the Humana Challenge in partnership with The Clinton Foundation at the La Quinta Country Club on January 22, 2015 in La Quinta, California. (Photo by Todd Warshaw/Getty Images)

LA QUINTA, CA - JANUARY 22: Phil Mickelson of the U.S. holes out of the fourth green trap to make birdie during round one of the Humana Challenge in partnership with The Clinton Foundation at the La Quinta Country Club on January 22, 2015 in La Quinta, California. (Photo by Todd Warshaw/Getty Images)