Phil Mickelson sparks controversy as four players tie for US Open lead

Photos: US Open 2018
Brooks Koepka became the seventh man to win back-to-back US Open titles after overcoming a testing and controversial week at Shinnecock Hills.
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Photos: US Open 2018
The 28-year-old Floridian beat England's Tommy Fleetwood by one shot with world No.1 Dustin Johnson two back and Masters champion Patrick Reed three adrift.
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