Rory McIlroy opened with a one-under 69 at Shinnecock Hills, sitting one stroke behind surprise leader Sam Stevens after a fog-delayed first round. Strong winds exceeding 30mph made the 7,440-yard Long Island course play even tougher than its fearsome reputation suggests. McIlroy's round featured a spectacular eagle on the par-five fifth, where he launched a 396-yard drive aided by the breeze before converting an 11-foot putt.

Only six players broke par among the early starters, highlighting the brutal conditions. The course has averaged just 9% under-par rounds across four previous US Opens held here, with thick five-inch rough and undulating greens proving punishing. USGA officials are watering greens to prevent them drying out, acknowledging past setup issues that drew criticism in 2004 and 2018.

World number one Scottie Scheffler struggled to a two-over 72 in his career Grand Slam bid, while playing partners Ludvig Aberg and Tommy Fleetwood both posted solid 69s and 70s respectively. Keith Mitchell made history by shooting 41 on the front nine and 29 on the back nine, signing for an even-par 70. Australian Adam Scott became only the second player to compete in 100 consecutive majors, joining Jack Nicklaus in that exclusive club.

McIlroy's measured approach paid dividends on a course where patience trumps aggression. His opening round puts him in prime position heading into Friday, though the blustery forecast suggests scores will only get higher. Anything around even par will likely be the benchmark for staying competitive this week.