Dustin Johnson sunk a long-range eagle putt on the first playoff hole in LIV Golf history to secure a victory in Boston on Sunday, defeating Anirban Lahiri and Joaquin Niemann on the extra hole.

Lahiri had the best third round of the playoff participants, posting a six-under 64 to work his way to 15 under, while Johnson shot 65 and Neimann a 66. Neimann came into the day one stroke off Talor Gooch's lead, while Johnson was alone in third place one further back.

In the playoff, which took place on the par-five 18th hole, Lahiri sailed over the back of the green, and Niemann found a fairway bunker, leaving Johnson as the only player to make the green in three and leave himself an eagle putt.

The two-time major winner made sure a second playoff hole was not necessary, bashing in the eagle, which would have sailed at least 10 feet past the hole if it did not hit it dead in the middle.

As well as the $4million prize for winning the event, Johnson and each of his 4 Aces GC teammates – Gooch (13 under), Pat Perez (seven under) and Patrick Reed (three under) –will also take home an extra $750,000 for topping the team standings for the third tournament in a row

It was a packed leaderboard down the home stretch, with Lee Westwood and LIV debutant Cameron Smith also holding a share of the lead with two holes remaining, before late bogeys took them out of the playoff and into a tie for fourth at 14 under.

Gooch, after entering the round in the outright lead, could only muster a one-under 69 as he watched the field race past him on a day with friendly scoring conditions.

Jason Kokrak finished seventh at 12 under, Mexico's Abraham Ancer was alone in eighth at 11 under, and rounding out the top-10 was a three-man tie for ninth at 10 under consisting of Kevin Na, Louis Oosthuizen and Sergio Garcia.

Phil Mickelson finished tied for 40th at two over, and the last-placed Sihwan Kim will take home $120,000 after finishing 16 over, posting rounds of 87, 63 and 76.

Two-time major winner Dustin Johnson stormed up the leaderboard in the second round of LIV Golf Boston but Talor Gooch remains on top one stroke ahead of tour newcomer Joaquin Niemann.

Johnson responded from his opening-day 67 with a seven-under-par round of 63 to move within two strokes of the lead on Saturday at The Oaks.

The 38-year-old American's stand-out day included eight birdies and an eagle on the par-five eighth hole, along with three birdies. Johnson had claimed the outright lead with three holes to play before Gooch regained it.

Gooch, who shared the lead with Matthew Wolff after the first day on Friday, remains on top at 12-under, with Niemann one shot behind and Johnson's round moving him up to 10-under.

Wolff slipped four strokes off the pace after carding 69 for the day, while tour newcomer Cameron Smith also dropped back with a one-under-par round of 69.

Anirban Lahiri is outright fourth at nine-under, with Jason Kokrak carding a five-under-par 65 to move into equal fifth with Bernd Wiesberger and Wolff at eight-under overall.

Johnson's surge along with Gooch's excellent two days means Four Aces GC are top of the standings in the team element at 22-under.

Hy Flyers GC, captained by Phil Mickelson, are second at 19-under led by Wiesberger and Wolff. Mickelson is back at three-over overall ahead of Sunday's final round.

Big new signings hit the ground running in the first round of LIV Golf Boston, but after 18 holes at The International Golf Club it is Matthew Wolff and Talor Gooch tied for the lead at seven under.

While Gooch got to his 63 in a traditional fashion, posting eight birdies and one bogey, Wolff had far more ups and downs, making up for his three bogeys with six birdies, an eagle and a hole-in-one – the first ace in LIV Golf history.

One stroke behind the leaders are new arrivals Cameron Smith and Joaquin Neimann, after both played in last week's PGA Tour Championship.

Smith had five birdies and two eagles, showing off his firepower, but a double-bogey on the par-four 14th hole cost him a chance at the first-round lead.

After his round, Smith called it "great fun" and said "it was nice to see a familiar face" about his pairing with Dustin Johnson.

The rest of the field is at least two further strokes back, with Kevin Na, Bernd Wiesberger, Louis Oosthuizen, Paul Casey and Anirban Lahiri occupying the tie for fifth at four under.

The logjam at three under includes Dustin Johnson and Pat Perez, who along with Gooch and Patrick Reed (one under) have their Four Aces GC sitting second in the team standings. They trail only Hy Flyers GC, consisting of Wolff, Wiesberger, Cameron Tringale (one over) and Phil Mickelson (four over, 45th out of 48).

Bryson DeChambeau and Carlos Ortiz are at one under, and the Koepka brothers – Brooks and Chase – shot even-par 70s.

20-year-old Kim Joo-hyung became the second-youngest player since 1932 to win a PGA Tour event – trailing only Jordan Spieth – as he produced a final-round 61 to run away with a five-stroke buffer and claim the Wyndham Championship at 20 under.

In doing so, he became the event's youngest ever winner, and after entering the last tournament of the season ranked in the 400s in the FedEx Cup standings, he booked his place in the playoffs later this month.

His final round included an incredible front-nine score of 27, with six birdies and an eagle, and making his win even more remarkable is the fact that he started his week with a quadruple bogey from his opening hole on Thursday.

Speaking to CBS after stepping off the final green, Kim said his ability to keep a sense of humour about his rough start was the key to bouncing back.

"I stayed very patient this week," he said. "I felt like after that quad, once I started to laugh it off I could feel like I was in a much better mental state. 

"Instead of being angry and depressed I just stayed in the moment – I can't believe I won with a quadruple bogey on the first hole – hopefully that doesn't happen again.

"It's definitely a week I will remember forever."

He added: "it was a hard day – I didn't know golf was this stressful before."

Finishing in a tie for second was Kim's South Korean compatriot Im Sung-jae and American John Huh at 15 under, with Ben Griffin alone in fourth at 14 under.

American trio Max McGreevy, Russell Henley and Taylor Moore tied for fifth at 13 under, and there was another two-stroke gap to the group rounding out the top-10 at 11 under consisting of England's Tyrrell Hatton, Australia's Cameron Percy, India's Anirban Lahiri, and Americans Brandon Wu and Chesson Hadley.

Germany's Stephan Jaeger posted Sunday's second-best round with a 62 to finish tied for 13th at 10 under, and Canada's Corey Conners produced a pair of 66s on the weekend to sit on the fringe of the top-20 after scraping through right on the cut-line, tied with Will Zalatoris at nine under.

A poor second round from John Huh opened the door at the Wyndham Championship, with Brandon Wu, Kim Joo-hyung and Ryan Moore capitalising to claim a share of the lead at nine under heading into the weekend.

Huh was two strokes clear after his opening round nine-under 61, but he was 10 shots worse on his second trip around Sedgefield Country Club, shooting a one-over 71 to sit one off the lead.

Of the three leaders, Kim had the best round with his 64, posting seven birdies and one bogey, with Moore shooting a 66, and Wu getting around in 67. All three posted top-five putting days according to Data Golf's strokes gained stats, with Kim leading the field (4.61 strokes gained), Moore third (3.31) and Wu fifth (3.06).

One stroke off the lead along with Huh is American Russell Henley and South Korea's Im Sung-jae, with India's Anirban Lahiri part of the next group at seven under.

Japan's Satoshi Kodaira and Australia's Brett Drewitt are in the group tied for 10th at six under, England's Tyrrell Hatton is at five under, and Sweden's Henrik Norlander rode the second-best putting performance of the day to reach the weekend at four under.

Will Zalatoris responded to a poor opening round with a 66 to sneak one stroke inside the cut-line, Adam Scott and Michael Gligic are right on the cut-line at two under, and pre-tournament favourites Shane Lowry and Corey Conners missed out by one stroke.

Tournament favourite Jon Rahm is joint-leader of the Mexico Open, posting a seven-under 64 in Thursday's first round.

Rahm, ranked number two in the world, went bogey-free in his round, with six birdies and an eagle on the par-four seventh hole.

He is in a five-way tie atop the leaderboard with Americans Jonathan Byrd, Trey Mullinax, Bryson Nimmer and Brendon Todd.

Speaking with the media after stepping off the 18th green, Rahm highlighted his success with the driver, finding the fairway with 12 of his 13 long-balls.

"When I feel at my best, I’m pretty much comfortable hitting driver anywhere," he said

"It was one of those rounds where it felt like everything clicked together. Short game was good, had a chip-in, putting was good and tee to green was fantastic… probably as solid a round as I played all year."

While he enjoyed his round, Rahm spoke about how the conditions changed towards the end of his day, and how it could play far tougher the rest of the weekend.

"Although I went into a little dry spell, I didn’t care about it so much because it is not the easiest golf course," he said.

"The one thing to keep in mind for people watching the scores – there’s a big difference between morning and afternoon (conditions). We had no wind for 13, 14 holes – it’s very, very scoreable. 

"Once the wind starts going 20, 30 miles an hour, this golf course starts showing some teeth."

England's Aaron Rai is one shot further back, along with Sahith Theegala, Aaron Wise and Scott Brown, trailed by a large group at five under, highlighted by Colombia's Sebastian Munoz.

Cameron Champ and Patrick Reed are one more shot back at four under, while Alvaro Ortiz is the highest placed of the Mexican contingent at three under, ahead of Armando Favela and Carlos Ortiz, who both shot 70.

In-form Davis Riley finished at two under, while Tony Finau and Cameron Tringale had disappointing days at even par, with the latter bogeying both the 17th and 18th to finish his round.

Shane Lowry made the biggest noise at TPC Sawgrass, even though Anirban Lahiri leads The Players Championship after the close of play on Sunday.

The Irishman hit a hole-in-one on the notorious par-three island green 17th hole, using a pitching wedge and getting the ball past the pin, before rolling back and dropping in.

The 2019 Open Championship winner came into the third round at one-under par, and bogeyed the par-five 11th before birdieing the 14th and 16th in a chaotic back nine.

After holing from the tee on the 17th, Lowry celebrated wildly with playing partner and Ryder Cup teammate Ian Poulter, proceeding to throw his ball into the crowd.

It was a stark contrast to the norm on the 17th, made even more treacherous with a stiff headwind, with Brooks Keopka and Collin Morikawa among those to put shots into the water.

On another weather-interrupted day, Lahiri leads the pack, managing to finish 11 holes on nine-under par overall as darkness descended on Sawgrass. The world number 322 bogeyed the first hole of the back nine, but steadied to birdie the par-five 11th.

Stormy weather in the Florida region has wreaked havoc on scheduling and bad light eventually stopped play on Sunday. The third round will finish on Monday, with all players at least managing to finish nine holes.

Tom Hoge and Harold Varner III are currently one shot back from Lahiri on eight-under par. Hoge bounced back from a bogey on the sixth, birdieing on the par-five ninth hole to close out his Sunday.

Sebastian Munoz, Paul Casey and Sam Burns are tied at seven-under overall, with Francesco Molinary, Daniel Berger, Camero Smith and Doug Ghim one further stroke back. at six-under overall.

With the second round finishing early on Sunday, Rory McIlroy only just managed to make the cut at two-over par. Driving into the water on the 16th, pars on the final two holes saved him, as two balls into the water from Scott Piercy on the 17th and missed the cut.

Having also just made the cut after 36 holes, FedExCup leader Scottie Scheffler is at one-over par, birdieing the par-five 16th to finish nine holes for the third round.