Adam Schenk remains atop the standings at the Valspar Championships after three rounds but Jordan Spieth and Tommy Fleetwood are both within striking distance one stroke behind.

The 31-year-old American, who has never won on the PGA Tour, was joint-leader after the first round and outright leader at the halfway mark, maintaining that through the third day in windy conditions on Saturday at the Copperhead Course in Florida.

Schenk carded a third-round one-under 70 that included two bogeys and three birdies. The American birdied the par-five 18th after hitting his approach within five feet to re-claim his lead, sitting eight under after three rounds.

Spieth had an eventful round that started with an eagle on the par-five first hole, but finished with a bogey on the 18th.

The 29-year-old American missed a five-foot par putt on the seventh, along with a seven-foot par putt on the 10th, while he managed birdie on the 11th after a bunker shot and had a three-putt bogey on the 13th.

The three-time major winner's two-under 69 round included an eagle, five birdies and five bogeys, having led by two strokes at one stage.

Former US Open and Open Championship runner-up Fleetwood also carded a two-under 69 to be seven-under overall. The Englishman's round was more routine compared to Spieth, with 16 pars and two birdies.

Webb Simpson, Taylor Moore and Cody Gribble are all tied at six-under overall, while Patton Kizzire made the major move up the leaderboard with a four-under 67 to be five-under overall.

Kizzire moved up 19 places overall for the round, enjoying a bogey-free round with four birdies. Justin Thomas dropped down the leaderboard after a one-over 72 to be two-under overall.

Cole Hammer is the leader after the first round of the RSM Classic, enjoying his only round for the week at Sea Island Resort's Plantation course on Thursday to post an eight-under 64.

The RSM Classic utilizes two courses at Sea Island Resort – the par-72 Plantation course, and the par-70 Seaside course. Each competitor will get one round on each course before the cut heading into the weekend, with the final two rounds to be played on the Seaside course.

Starting on the back-nine, 23-year-old Hammer posted nine birdies and seven pars from his first 16 holes, before his first blemish came with a bogey on the 17th to finish alone atop the leaderboard at eight under.

In second place is Ben Griffin, who also played the Plantation course, going bogey-free for his seven-under 65.

Beau Hossler and Callum Taren are tied for third after shooting six-under 64s on the Seaside course, with that appearing as the harder of the two tracks. 

There is a logjam tied for sixth at five under, and of the 16 payers to shoot five under or better, only four – Hossler, Taren, Chris Gotterup and Andrew Putnam – did it on the Seaside course.

Rising talent Sahith Theegala and recent winner of the Bermuda Championship Seamus Power are one further back at four under, with Italy's Francesco Molinari and Canada's Taylor Pendrith at three under.

It was a tough day out for some of the field's biggest names, with former Masters champion Danny Willett struggling to three over on the Seaside course, while former world number one Jason Day had similar issues on his way to four over.

The shot of the day went to Webb Simpson, who took advantage of his only round this week at the Plantation course with an ace on the par-three third hole. 

Russell Henley carded his first bogey of the tournament but still managed to double his lead at the Wyndham Championship on Friday. 

Seeking his first PGA Tour win in four years, Henley shot 64 in the second round and sits at 14 under par for the tournament. 

That left him four strokes up on Rory Sabbatini (64), Webb Simpson (65) and Scott Piercy (66) heading into the weekend in Greensboro, North Carolina. 

Starting on the back nine at the Sedgefield Country Club, Henley bogeyed number 12, his third hole of the day, before reeling off four consecutive birdies from 14 through 17.

Three more birdies coming home after the turn solidified his edge as he eyes his first win since the 2017 Houston Open. 

Henley's 126 matches the lowest 36-hole score posted on tour this season along with Stewart Cink at the RBC Heritage. 

Tokyo Olympics silver medallist Sabbatini had a bogey-free day to match Henley's round, while Simpson remained near the top of the leaderboard thanks in part to an eagle at the fifth. 

Simpson's success is no surprise, as he has finished in the top three at the Wyndham the last four years after winning it in 2011. 

Tyler Duncan had the best round of the day with a 62 that left him five shots back at nine under along with Justin Rose (65) and Brian Stuard (66). 

Among other notables, Bubba Watson (69) and Adam Scott are 10 strokes back at four under, one shot better than the cut line. 

Masters champion Hideki Matsuyama (69) missed the cut by a stroke, while former world number one Luke Donald (67) finished at one under and two-time major winner Zach Johnson fell short at even par along with defending tournament champion Jim Herman. 

Also finished for the week-end are Padraig Harrington (76) at two over, Rickie Fowler (72) at three over and Charl Schwartzel (73) at seven over. 

Fowler's missed cut means his season is over, as he will not make the FedEx Cup playoffs for the first time in his career. 

Two players who were tied for second after Thursday's opening round, Michael Thompson and Ted Potter Jr., also missed the cut after slumping to 74 and 77, respectively.