Lee Westwood takes a one-shot lead into the final round of the Arnold Palmer Invitational, with Bryson DeChambeau and Jordan Spieth in the chasing pack.
Westwood carded a seven-under 65 on a low-scoring day at Bay Hill to move to 11 under and top of a star-studded leaderboard, bolstering his hopes of claiming a first PGA Tour title since 2010.
The 47-year-old's closest challenge comes from overnight leader Corey Conners and DeChambeau, who sent social media into a frenzy with his aggressive tee shot at the par-five sixth, while Spieth sits tied-fourth alongside Keegan Bradley after firing a hole-in-one on his way to a third-round 68.
Tommy Fleetwood is in sixth spot and Rory McIlroy slipped four behind after a level-par 72, while defending champion Tyrrell Hatton jumped within five of the lead thanks to a six-under 66.
Heading into the weekend five shots back, Westwood drained a 30-footer at the first and bounced back from missing a six-footer at the next by making four birdies in a five-hole stretch from the fourth.
Westwood rolled in from 18 feet at the 10th and cancelled out a three-putt bogey at the 11th by birdieing the 13th, with the Englishman responding to another dropped shot at the 14th by making a 30-foot eagle at the par-five next to move into a share of the lead.
The former world No 1 then nailed another long-range putt at the last to set the clubhouse target, while Conners - playing in the final group - got up and down to avoid dropping a shot at the 18th and stay within one of the lead.
DeChambeau birdied two of his first four holes and added another par-five sixth after a monster 370-yard drive over water, with the US Open champion then picking up a shot from six feet at the seventh but bogeying the eighth to reach the turn in 33.
A tap-in birdie at the 12th briefly moved DeChambeau into top spot, with the 27-year-old then recovering from a missed six-footer at the 14th to post a two-putt gain at the par-five next and get back to 10 under.
Bradley carded a round-of-the-day 64 to get within two of the lead alongside Spieth, who followed a 20-foot birdie at the first with an incredible ace at the par-three next before converting from 30 feet to save par at the third after finding water off the tee.
The three-time major champion holed out from the bunker at the seventh and followed a 35-foot birdie at the 10th with a two-putt gain at the 12th to go six under for his round, only to fall back with a three-putt blemish at the 14th and another bogey at the 17th.
McIlroy was alongside Fleetwood on eight under until a final-hole bogey, where he failed to convert from five feet, while Hatton made an eagle and three birdies on his back nine to move to tied-11th.
Matt Fitzpatrick and Paul Casey both sit in the group six back and in tied-18th, while fellow Englishman Justin Rose withdrew mid-round because of a back injury.
Who will win the Arnold Palmer Invitational? Live coverage begins on Sunday with Featured Groups from 1pm on Sky Sports Golf, ahead of full coverage from 5.30pm.