Little-known American Andrew Landry has extended his early lead after play resumed in the storm-riddled first round of the US Open.
Play resumed at 2.33pm local time after a second lengthy rain delay at an Oakmont Country Club that has had its fire doused by torrential rain.
Chief among those to take advantage has been Landry, a bolter from Texas.
The world No.624, in his first major championship, began on the 10th and has five blemish-free birdies in 13 holes to be three shots clear with a short birdie putt to come on the 5th.
Overnight rains softened the fiery Oakmont layout, allowing early players to take advantage on either side of the one hour and 19 minute delay.
The second delay of two hours and 26 minutes took the total time lost so far to three hours and 45 minutes.
Dual Masters champion Bubba Watson, New Zealand’s Danny Lee, England's Lee Westwood and boom rookie Bryson DeChambeau share second at two under.
Defending champion and world No.2 Jordan Spieth is square through six holes, while world No.3 Rory McIlroy is two over par through seven.
Only two of the seven Australians in the field are on-course early with Aron Price, who birdied the first to briefly lead the tournament, now four over playing the 13th.
Compatriot Marc Leishman has played solidly barring a mishap on the par-three 13th which he corrected after the resumption with a birdie on the 17th to be square through nine holes.
World No.1 Jason Day plus Adam Scott, Geoff Ogilvy, Steven Bowditch and Cameron Smith are due out in the afternoon wave, however their tee times will now be delayed.
Further storms are still forecast.