Former champion Wyndham Clark has tamed treacherous Shinnecock Hills to open up a four-stroke lead during a weather-marred US Open first round.
As milestone-man Adam Scott led a disappointing Australian challenge, Clark cashed in on surprisingly easier afternoon conditions to surge to six under through 16 holes before play was suspended under darkness.
A two-hour fog delay kept the field waiting on Thursday before Scott ground out a three-over-par 73, in his 100th consecutive major championship.
The former world No.1 found himself nine shots off the pace after Clark burst from the pack with an eagle and two birdies in a brilliant back-nine stretch.
The 2023 winner will return early on Friday (Saturday AEST) looking to retain the first-round lead and potentially break the four-under first-round record at the famed layout on New York's Long Island.