Rory McIlroy stretched his U.S. Open lead to six strokes on Friday after a record-setting start to his second round at Congressional Country Club.
The 22-year-old Northern Irishman holed out his approach shot on the par-four eighth hole for eagle to reach 10 under par at the 111th U.S. Open, the fastest any player had ever reached double digits below par in the championship.
McIlroy also birdied the fourth and sixth holes before his spectacular eagle, where he landed his second shot about 18 feet past the hole and watched it trickle down a slope and curl into the cup. Even playing partner Phil Mickelson clapped in admiration at the shot by the Briton, who had led the Masters two months ago by four strokes heading into the final round before blowing his chances with a last day 80.
The sensational play by McIlroy, who had yet to make a bogey and held a three-shot lead overnight, was threatening to turn the year's second major into a rout.
Closest to the young Briton was former Masters champion Zach Johnson, who eagled the sixth hole and had two birdies to cover the front nine in four-under 32, matching the score registered by McIlroy on a humid, overcast day.
Johnson, who posted an opening 71, stood at four-under, one clear of fellow American Robert Garrigus, who was two-under for the day through 11 holes.
Also at three under par and yet to tee off was Yang Yong-eon of South Korea, who was yet to tee off at the time of going to print. Out on the course and tied for fifth place on two under par were Masters winner Charl Schwartzel of South Africa, who was one-over through eight holes, and Spain's Sergio Garcia, who was even-par as he made the turn.
Later starters who returned two-under-par 69s in the first round, included British Open champion Louis Oosthuizen and Ryan Palmer.