A stunning eagle launched Australian Adam Scott past countryman Jason Day into the outright lead at the Masters, before a three-putt on the next hole brought him back as rain lashed a weather-interrupted second round at Augusta National.
Scott returned from a 40-minute weather delay and fired a 231-yard second shot into the par-5 15th hole.
He knocked in the eagle putt to move to eight-under par.
But the 2013 Masters winner missed a short par putt on the par-3 16th - the bogey dropping him back into a tie for the lead at seven under alongside Day.
Earlier, Day fired a five-under-par 67 and the former world No.1 is joined in share of the clubhouse lead by Scott, British Open winner Francesco Molinari (67), Brooks Koepka (71) and Louis Oosthuzien (through 15 holes).
Dustin Johnson (70) and Justin Harding (69) are a shot behind at six under, while four-time Masters winner Tiger Woods sits ominously at four under.
Marc Leishman (one under, 14 holes) and Cameron Smith (two over, 13 holes) round out the Australian contingent at the April major.
The projected cut line for the Masters is three-over-par given Augusta still uses the rule that those within 10 shots of the lead advance to the weekend rounds.