Jason Day has maintained his place high on the leaderboard while Tiger Woods is mounting a vintage charge midway through a weather-interrupted second day at the Memorial tournament in Ohio.
Former world No.1 Day posted a four-under-par 68 to climb to eight under and he sits two shots back of the lead, held by American Kyle Stanley.
Bryson DeChambeau and former amateur world No.1 Joaquin Niemann are tied for second at nine under.
With US PGA Tour officials suspending play at 4.20pm due to inclement weather, Day shares fourth place with Japanese ace Hideki Matsuyama (71) and American duo JB Holmes (66) and Wesley Bryan (68), and Beau Hossler.
Meanwhile, five-time Memorial champion Woods has the galleries on their edges of their seats having picked up five shots through 11 holes to climb to five under and just four off the pace.
Woods, who won each edition at Muirfield Village between 1999 and 2001, mixed four front-nine birdies with a bogey before holing out from 95 yards for eagle at the par-5 11th.
Earlier, Day equalled his best 36-hole score at the Jack Nicklaus-hosted Memorial, which is considered a home event for Day given he lives in Columbus and is a Muirfield Village member.
But 12-time US Tour winner Day has struggled at Memorial, with only one top-25 result in nine previous appearances.
"I feel good about my game this year; I've had two wins," Day said.
"I haven't had great finishes here, so the expectation of me playing is a little bit different this year."
Next best of the Australians at two under are Adam Scott (13 holes) and John Senden, who iced a 69 with a stunning approach to four feet which he converted for birdie at the difficult par-4 18th.
Rod Pampling and Marc Leishman both sit at one over during their rounds and are fighting to sneak inside the projected 36-hole cut of even par, while Cameron Davis (nine holes) is a shot back.
Rounding out the Australian contingent is Cameron Smith, whose 72 left him at three over and is likely to miss the weekend.