After Kiawah Island's Ocean Course weathered a storm that caused the suspension of third-round play on Saturday, Rory McIlory returned to finish what he started to carry a three-shot advantage into the final 18 holes of the PGA Championship.
Rory McIlroy played his final nine holes in 1 under par on Sunday morning, including two birdies and a bogey to post a 7-under total through 54 holes.
McIlroy is three clear of Carl Pettersson, one of three 36-hole co-leaders, who also battled back from a rough start on Saturday to post even-par 72.
The duo will be joined in the final group by Bo Van Pelt. The consistent American matched McIlroy's round-three best 5-under 67 to improve to 3 under for the championship.
Van Pelt is tied with Adam Scott and 2008 Masters winner Trevor Immelman.
Four players are tied for sixth at 2 under, five back of McIlroy, including Steve Stricker, Tiger Woods, Vijay Singh and Peter Hanson.
The final round begins at 11:44 a.m. local time, with players grouped in threesomes off the first and 10th tees. The last group of McIlroy, Pettersson and Van Pelt will begin at 1:45 p.m.