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

    By Rob Hodgetts, CNN

    Updated 1814 GMT (0214 HKT) June 17, 2018

    Chat with us in Facebook Messenger. Find out what's happening in the world as it unfolds.

    Brooks Koepka became the seventh man to win back-to-back US Open titles after overcoming a testing and controversial week at Shinnecock Hills.
    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.
    Hide Caption
    1 of 27
    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.
    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.
    Hide Caption
    2 of 27
    Koepka is the first player since Curtis Strange in 1988 and 1989 to win back-to-back US Open titles.
    Photos: US Open 2018
    Koepka is the first player since Curtis Strange in 1988 and 1989 to win back-to-back US Open titles.
    Hide Caption
    3 of 27
    Despite having at least a share of the lead at the end of each of the first three rounds, Johnson was unable to add a second US Open title to 2016's breakthrough major win.
    Photos: US Open 2018
    Despite having at least a share of the lead at the end of each of the first three rounds, Johnson was unable to add a second US Open title to 2016's breakthrough major win.
    Hide Caption
    4 of 27
    Fleetwood took advantage of the USGA's kinder set-up following a controversial Saturday to shoot only the sixth 63 in US Open history 45 years after Johnny Miller posted the first in 1973 at Oakmont.
    Photos: US Open 2018
    Fleetwood took advantage of the USGA's kinder set-up following a controversial Saturday to shoot only the sixth 63 in US Open history 45 years after Johnny Miller posted the first in 1973 at Oakmont.
    Hide Caption
    5 of 27
    Phil Mickelson was back a day after sparking the "putt-gate" controversy when he hit his still moving ball back towards the hole. The left-hander, who improved on Saturday's 81 with a closing 69 to end +16, declined to offer any further comment on the incident.
    Photos: US Open 2018
    Phil Mickelson was back a day after sparking the "putt-gate" controversy when he hit his still moving ball back towards the hole. The left-hander, who improved on Saturday's 81 with a closing 69 to end +16, declined to offer any further comment on the incident.
    Hide Caption
    6 of 27