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IRVING, TX - MAY 31: Dustin Johnson celebrates with his caddie after making birdie on the first hole during the Final Round of the AT&T Byron Nelson at the TPC Four Seasons Resort Las Colinas on May 31, 2015 in Irving, Texas. (Photo by Tom Pennington/Getty Images)

IRVING, TX - MAY 31: Dustin Johnson celebrates with his caddie after making birdie on the first hole during the Final Round of the AT&T Byron Nelson at the TPC Four Seasons Resort Las Colinas on May 31, 2015 in Irving, Texas. (Photo by Tom Pennington/Getty Images)
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Getty Images Sport Tom Pennington