Keegan Bradley and Sam Burns remained tied for the lead through three rounds at the Valspar Championship, where world number one Dustin Johnson fell down the standings.
Level atop the leaderboard at the tournament's halfway stage, American pair Bradley and Burns were again locked together on 14 under following Saturday's penultimate round in Palm Harbor, Florida.
Bradley, who won the 2011 US PGA Championship, and Burns both carded two-under-par 69s to be a stroke clear of charging countryman Max Homa at Innisbrook Resort and Golf Club.
Burns – eyeing his maiden PGA Tour title – held a commanding three-stroke lead after Bradley bogeyed the 13th hole, but the latter chipped in for an eagle to cut the deficit to just one shot.
Bogey at the last for both Sam Burns and Keegan Bradley.— PGA TOUR (@PGATOUR) May 1, 2021
They'll share the 54-hole lead at -14. pic.twitter.com/aoJ2Me7nmf
A Burns bogey on the par-four 16th left the duo deadlocked again before the pair exchanged bogeys at the last to head into the final round as the men to beat through 54 holes.
It is Burns' third 54-hole lead/co-lead of the season, level with Jordan Spieth for the most on the PGA Tour.
The last time Burns held the 54-hole lead/co-lead on tour, Homa came from behind to win the 2021 Genesis Invitational and the latter is once again looming large.
Homa, who posted a third-round 66, is looking to become the third player to win multiple titles during the 2020-21 season, joining Bryson DeChambeau and Stewart Cink.
American star Justin Thomas shot a four-under-par 67 to catapult himself into a tie for 18th, eight shots off the pace.
Johnson, meanwhile, struggled to a three-over 74 on day three of the event.
There was a dreadful end to the round for Johnson, who had two double-bogeys from his final three holes to crash down to even par for the tournament – 14 strokes behind Bradley and Burns.