US Open: Brooks Koepka lays down marker for Bryson DeChambeau

[Nickie]

Two-time winner Brooks Koepka lays down a marker for defending champion Bryson DeChambeau as he finished two behind Russell Henley's clubhouse lead in the US Open first round at Torrey Pines.

More... (http://www.bbc.co.uk/sport/golf/57501497)