Sam Burns reigned supreme at Innisbrook Resort and Golf Club, where he upstaged Keegan Bradley on Sunday.
Keegan Bradley and Sam Burns are still the men to beat heading into the final round of the PGA Tour tournament.
Keegan Bradley leads by two shots after an opening day seven-under 64, while Justin Thomas and Dustin Johnson started slowly.
Winner of the PGA Tour tournament in 2000 and 2004, Stewart Cink completed the treble after carding a one-under-par 70 in the final round.
Two-time champion Stewart Cink carded a second successive 63 to set the 36-hole record at Harbour Town on Friday.
Cameron Smith birdied three of the final four holes for a career-best 62 to take the opening-round lead at the RBC Heritage.
Dustin Johnson shot a three-over 75 to miss the cut at the Masters, bemoaning his putting.
Englishman Justin Rose's lead was halved on Friday in a Masters tournament that is nicely poised.
Englishman Justin Rose lit up the back nine in testing conditions at Augusta to open up a four-shot lead with an opening 65.
Hideki Matsuyama took an early lead in the first round of The Masters, while Dustin Johnson had two bogeys in his first five holes.