The first-time champion shot an even-par 70 for the final round Sunday, beating Mickelson by one stroke in a tournament that saw PGA veterans and newcomers struggle to tackle difficult course conditions.
Mickelson, whose second-place finish was the sixth time the 43-year-old came up just short of victory at the Open, walked away with a $700,000 prize.
The total prizes totaled $7,846,000:
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UPI Sports Results for September 19, 2014