A weather delay gave Augusta leader Justin Rose time to reflect on a mixed start to Saturday's play at The Masters.
Rose had led by four strokes after the first round but saw that advantage cut to a single shot on Friday, with Will Zalatoris and Brian Harman his closest challengers.
The one-time major champion was last out on moving day but quickly set about restoring a healthy lead.
Indeed, birdies at the first two holes had Rose three clear at nine under, yet this hot streak did not last.
Rose found the bunker at four and could only rescue a bogey, before befalling the same fate at the fifth, the sand contributing again.
The Englishman recovered with par at the sixth and had just played a solid tee shot at seven when an official approached and sounded the horn to signal an imminent storm.
As play was suspended, Rose was again one ahead of Zalatoris, who was joined at six under by Marc Leishman.
Corey Conners was the day's big mover to that point, in a tie for fourth after playing 11 holes at three under.
Conners' hole in one at the par-three sixth was the highlight, coming straight after the first of two bogeys.
Justin Thomas and Hideki Matsuyama - both one under for the day - were level with Conners, while Harman was back at four under following three bogeys and a birdie through seven.
Jordan Spieth's challenge faltered, although a superb birdie brought him back level with Harman after a double-bogey at seven had threatened to knock him out of contention entirely.
Patrick Reed - two under on Saturday and one under for the week - and Phil Mickelson - three under to reach even par - were among those to complete their rounds before the weather hit.