Stewart Cink is one day away from earning his second PGA Tour victory of the season.
The 47-year-old followed up his historic round Friday by shooting two under Saturday to hold a five-stroke lead over the rest of the field after moving day at Harbour Town Golf Links in Hilton Head, South Carolina.
Collin Morikawa will pose a new threat for Cink heading into Sunday, as the 24-year-old shot four under Saturday to climb into sole possession of second place, ahead of Emiliano Grillo, who maintained his third-place standing.
Matt Wallace and Webb Simpson had major climbs to head into the final round as legitimate contenders.