Russell Knox's bogey-free 65 earned him top spot on the Valero Texas Open leaderboard after the first round of action at TPC San Antonio.

The Scotsman was excellent all day, highlighted by his four consecutive birdies starting on the 12th hole to finish seven under.

He is one stroke ahead of Denmark's Rasmus Hojgaard, who eagled the par-five 18th to finish at six under and make up for his double-bogey on nine.

Speaking to the media after his round, Knox spoke about getting control of his driver, and the potential to play in next week's US Masters.

"I would love to win and get to play next week," he said. 

"I know my game is good, so I've got to keep playing well and see if I can have a great finish.

"I've been a little more consistent tee to green. I'm back to kind of feeling like the way I should be playing, which has been nice.

"Off the tee's been kind of important for me. Over the last couple years I just kind of got off track slightly, hitting a few wayward tee shots.

"I've worked hard with my coach, Mark McCann, and we've really gone back to fundamentals, got my set-up correct and it just gives me the freedom to kind of swing away.

"I know it's never going to be perfect, but the last couple months it's really been a strength of mine again."

Matt Kuchar and Englishman Aaron Rai are in a four-player tie for third at five under, with India's Anirban Lahiri and Australian Matthew Jones part of the large contingent at four under.

In-form Canadian Corey Conners finished tied with Richard Bland and Tony Finau with a big group at two under, with Ian Poulter and Keegan Bradley one shot further back.

It was an up-and-down round for Rickie Fowler, with his bogey on 18 forcing him to accept even-par for the day, which he shared with stars Rory McIlroy and Jordan Spieth.

Bryson DeChambeau and Lee Westwood highlighted the group at plus one, while Jason Day and Hideki Matsuyama will be fighting to make the cut after carding plus two.

Hideki Matsuyama produced a stunning second shot on the first playoff hole to claim victory at the Sony Open in Hawaii as he triumphed over Russell Henley.

The reigning Masters champion had trailed by five strokes on the back nine but produced a surge capped with a birdie at the last to force a playoff with Henley after both finished 23 under par.

Henley's putt on the 18th to win the tournament skimmed the outside edge of the hole and he was left to rue that miss in quite astonishing fashion.

They returned to the same hole for the playoff and Matsuyama, having gone for the 3-wood off the tee, elected to use the same club for his second shot from 277 yards away and could not have hit it any better, sending it to three feet for an eagle putt to secure his eighth PGA Tour title and his third in less than a year as Henley made bogey.

Waialae Country Club holds a special place in Japanese golf history, with it being the course where Isao Aoki became the first player from the country to win on the PGA Tour.

And Matsuyama was thrilled to replicate his achievement.

"I got on a roll, I'm glad it came out this way," said Matsuyama. "To follow him [Aoki] up, I'm over the moon."

Kevin Kisner and Seamus Power were Matsuyama and Henley's closest challengers, finishing in a tie for third, four strokes off the pace.

Russell Henley remains in the lead ahead of the final day of the Sony Open in Hawaii but 2021 Masters Championship winner Hideki Matsuyama surged into contention on Saturday.

Henley carded a three-under-round of 67 to maintain his lead after being three strokes ahead at the halfway mark at the Waialae Country Club.

Japanese 29-year-old Matsuyama, though, moved up the leaderboard into second spot, two shots behind Henley, with a seven-under-63 to be 16 under overall.

Henley leads at 18 under, with Matsuyama 16 under, before four players are tied at 14 under in third in Adam Svensson, Seamus Power, Matt Kuchar and Haotong Li.

The American, who won the Sony Open in 2013, had two bogeys and five birdies in his round, including a 16-foot birdie putt on the 17th hole to buffer his lead after Matsuyama made his move earlier in the day.

Matsuyama, who carded rounds of 66 and 65 on the first two days, improved with a day-three 63 headlined by four birdies in his final seven holes.

Svensson and Power both hit five-under-rounds of 65 to remain in contention, while Kuchar and Li are close but carded rounds of three-under and two-under to fail to close on Henley.

American Russell Henley holds a three-stroke lead at the halfway mark of the Sony Open in Hawaii after a seven-under-63 on Friday.

Henley, who won the Sony Open in 2013, carded an eight-under-62 on the opening day and backed that up to be 15-under and three shots ahead of second-placed Haotong Li.

Li along with third-placed Matt Kuchar and equal fourth Chris Kirk all carded rounds of five-under-65.

Kirk is one of 10 players tied for fourth alongside Seamus Power, Stewart Cink, Corey Conners, Adam Svensson, Keita Nakajima, Davis Riley, Dylan Wu, Brandt Snedeker, Payton Kizzire and 2021 Masters winner Hideki Matsuyama.

Henley's seven-under-63 was a round-best alongside Cink and Charles Howell III who both surged up the leaderboard.

The 32-year-old American had an even card on the second round before holing a bunker shot for eagle on the 18th hole, his ninth hole of the day.

Henley came home strong with four birdies and an eagle in his final six holes, including a 29-foot eagle putt. He has three PGA Tour titles across his career, the last being in 2017.

Veteran Jim Furyk dropped well off the pace after his fast start, with a two-over-round of 72 leaving him six under at halfway, while day one leader Kevin Na slipped to eight under after a round of one-over-71.

World number one Jon Rahm made his move on the third day of the Tournament of Champions with a course-record round to join Cameron Smith with a share of the lead in Hawaii.

The Spaniard carded a 12-under-round 61 to move level with Smith, who led by three shots at the halfway mark, on 26 under after three rounds at the Plantation Course at Kapalua Resort.

Rahm's round was an equal course record, with 2017 PGA Championship winner Justin Thomas also carding a 12-under-61 on Saturday to surge up the leaderboard to 17 under.

Last year's US Open champion Rahm shot 11 birdies with one eagle and one bogey in his round, drawing level with the Australian when he sunk a 29-foot putt on the 17th hole.

Smith, who also had a one-shot lead after the opening day, held firm with six birdies on his back nine.

The lead pair are five strokes clear of the next best, with American Daniel Berger slipping off the pace after a third straight round of 66 to be 21 under.

Berger finished his round with five consecutive birdies to keep his faint hopes alive.

Matt Jones, Sungjae Im and Patrick Cantlay are tied at 20 under, ahead of Marc Leishman at 18 under with Thomas and 2021 Masters winner Hideki Matsuyama at 17 under.

Top 10 duo Bryson DeChambeau and Xander Schauffele were unable to make any major inroads on the third day and are further back at 15 under.

Australian Cameron Smith holds a one-stroke lead after the opening day of the PGA Tour's calendar year-opening Tournament of Champions in Hawaii on Thursday.

Smith carded an eight-under-par 65 which included two eagles along with five birdies and one bogey to claim the lead ahead of three players including world number one Jon Rahm on seven under.

Rahm is tied with American pair Daniel Berger and Patrick Cantlay following rounds of 66 in good conditions.

More than half of the 38-player field broke 70 in the conditions, although Grand Slam winners Phil Mickelson, Jordan Spieth (both 71) and Justin Thomas (74) were not among that group.

Top-ranked Rahm and PGA Tour Player of the Year Cantlay were both returning to competitive golf after several months off and made fine transitions.

The Spaniard had seven birdies and no bogeys in his round, while Cantlay started with a bogey but finished in style, with four birdies and an eagle in his final five holes.

Berger might have shared the lead with Smith if not for a bogey on the penultimate hole, having made five birdies on his front nine.

Erik van Rooyen, Kevin Na and Sungjae Jim are six under, while world number two Collin Morikawa and four-time major winner Brooks Koepka are among five players at five under.

Top 20 trio Bryson DeChambeau, Xander Schauffele and Hideki Matsuyama are also not far off the pace after opening rounds of four-under for 69.

Hiroshi Iwata holds a one-shot lead and Hideki Matsuyama also made a promising start to the Zozo Championship on home soil.

Appearing in a PGA Tour event for the first time since the 2017 season, Iwata got off to a flyer with a seven-under 63 at the Narashino Country Club on Thursday.

The 40-year-old went out in 32 and finished his round with an eagle three to top the leaderboard after making four birdies and just the one bogey on the back nine.

Matsuyama is just a shot off the lead following a blemish-free first round of 64 in the Tokyo suburbs, where the tournament could not be staged last year due to the coronavirus pandemic.

The Masters champion started with two birdies in the opening three holes and moved to three under with another gain at the sixth, before making another three birdies after the turn.

Joaquin Niemann also shot a bogey-free 64 to take a share of second place with home favourite Matsuyama.

Englishman Matt Wallace is just two strokes off the lead, having dropped a couple of shots on the back nine.

World number three Collin Morikawa has work to do following an opening one-over 71, a stroke behind Ryder Cup team-mate Xander Schauffele.

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. 

Abraham Ancer thought he had blown his shot at his first PGA Tour win the first time he played the 18th hole on Sunday. Turns out he just needed two more chances on the hole to make it happen. 

Ancer birdied the second playoff hole from six feet and watched as Sam Burns missed almost the same putt to give him the WGC FedEx St. Jude Invitational title as the third man in the playoff, Hideki Matsuyama, also made par. 

After finishing as runner-up four times in his previous 120 Tour starts, Ancer finally prevailed in Memphis to become the ninth first-time winner this season and the fourth player from Mexico to win on Tour. 

"This is surreal," he told CBS. "I thought I left so many shots out there on the back nine, but you never know. Golf is crazy.

"There's been some times that I felt like I made enough birdies to win and I didn't win. This is kind of how it goes and I'm happy that I got lucky."

A significant portion of that luck came on the first playoff hole, when Matsuyama had a chance to win it but saw his long putt for birdie on 18 lip out, sending the trio back to the 18th tee for another go.

The 2021 Masters champion turned in the round of the day just to make the playoff, firing a bogey-free seven-under 63 to fly up the leaderboard on the final day. 

Burns was close behind with a 64, a double bogey on 13 his only blemish. 

Harris English, who held a two-stroke lead after each of the first three rounds, watched those three fly by him as he slumped to a three-over 73 and finished fourth after opening the tournament with rounds of 62, 65 and 65. 

English bogeyed the opening hole before regaining his stride with three birdies, but he did not make another after the eighth hole, posting double bogeys at 11 and 14 and a bogey at the par-five 16th. 

The American said afterward that a warning for slow play on the front nine knocked him out of rhythm and he felt like he was rushing the rest of the day.

His playing partner Bryson DeChambeau had an even more difficult time after working himself into contention with a 63 on Saturday. 

DeChambeau carded a triple-bogey six on the 11th and also did not manage a birdie on the back nine on the way to a 74 that left him tied for eighth at 12 under for the tournament. 

Rough as that triple was for DeChambeau, honours for worst hole of the day went to Kim Si-woo.

The South Korean hit five successive shots in the water at the 11th on the way to a 13 – the worst score on a par-three hole on the PGA Tour since 1983, not including majors.

Among other notables, Dustin Johnson (70) tied for 10th at 11 under, one stroke better than Rory McIlroy (66) and Jordan Spieth (67).

Phil Mickelson (68) finished at seven under along with Louis Oosthuizen, who floundered to a 74 in the final round. 

Sergio Garcia (72), Collin Morikawa (69) and defending champion Justin Thomas (72) were at five under, with Patrick Reed (70) and Lee Westwood (71) one back of them. 

Olympic champion Xander Schauffele (68) was at even par and Brooks Koepka (76) at two over. 

Xander Schauffele landed Olympic gold on the golf course for the United States after a dramatic final round saw Rory Sabbatini's 61 almost snatch top spot on the podium.

A terrific third shot at the 18th left Schauffele with a short putt for victory, after he found deep rough off the tee and could not go for the green in regulation.

He held his nerve to protect his one-shot advantage, finishing on 18 under par as Sabbatini took a spirited silver for Slovakia.

The battle for the bronze at Kasumigaseki Country Club went down to a seven-man play-off, with Chinese Taipei's world number 208 CT Pan landing the third-place medal and Hideki Matsuyama, Collin Morikawa and Rory McIlroy among those left disappointed.

By the time they reached the fourth extra hole it was down to a two-man battle between Open champion Morikawa and Pan, who had both posted closing 63s. Morikawa found sand with his second shot, the ball becoming plugged, and although he just about got it on the green, the putt he left went astray, leaving Pan to roll in an eight-footer for the medal.

Schauffele and Matsuyama were in Sunday's final group to start, just as they were at The Masters in April when Japan's newest golf star became his country's first men's major champion.

This time it was Schauffele's time to triumph, with the 27-year-old Las Vegas resident, who was born in San Diego, just about doing enough as a four-under 67 sealed the title.

And he could relax at last, the tension of the past hour all forgotten.

THIS ONE'S FOR DAD

Schauffele, whose mother was raised in Japan, was asked if it was his biggest career win and replied: "I'd like to say so, yeah."

His father, Stefan, has been with him in a coaching capacity this week, and Schauffele said: "I really wanted to win for my dad. I am sure he is crying somewhere right now. I kind of wanted this one more than any other.

"You are trying to represent your country to the best of your ability and then you add family stuff on top of that and I'm probably going to have a nice call with my grandparents tonight. I am sure they are back home, everyone is back home watching. I was feeling the love from San Diego and Las Vegas this whole time.

"I'm a little speechless right now, quite honestly."

Schauffele almost lost his ball when he drove into trees on the right side of the fairway on the par-five 14th, hitting a provisional ball in case there was no sign of the first.

That ball was soon located though, with Schauffele taking a penalty to bring it into a just-about playable position.

Matsuyama found the green in two but Schauffele was still short after four and was grateful to make six. Matsuyama went close with his eagle putt but had to settle for birdie, moving one shot behind Schauffele who slipped back to join Sabbatini on 17 under.

"It got a little dicey there," Schauffele later said. "When you are trying to win you need some things to go your way. I took a pretty big risk trying a hack-it-through-a-bush type shot and it missed my gap. I literally did the Matrix through these trees and it could have easily hit a tree and gone out. So, today was definitely my day."

HANGING TOUGH, DESPITE THE ROUGH

It was a hectic leaderboard all day long. Sabbatini had come from way back in the field thanks to his 10-under round and was waiting in the clubhouse to see what reward that would bring him.

Home favourite Matsuyama bogeyed the next to fall two back but gave himself a chance of birdie at the short next hole with a tee shot to around 10 feet, only to miss by a whisker.

Ireland's McIlroy was then two inches away from a birdie at the last that would have taken him to 16 under and secured bronze, yet he went into the play-off instead, as did Matsuyama.

Schauffele made birdie at 17 to edge in front on his own, and after the wretched tee shot at the last threatened to undo his gold medal mission, the American saved his best for last.

The third shot was almost right at the pin, finishing four feet away. Schauffele made no mistake, succeeding Justin Rose as Olympic champion, with the sport having returned to the Games programme in 2016 for the first time in 112 years.

The play-off also featured Chile's Mito Pereira, Great Britain's Paul Casey and Colombia's Sebastian Munoz, with Pan the unlikely figure to emerge with the bronze.

The delay to the Tokyo Olympics has been a source of frustration for countless athletes, but perhaps none more so than the Japanese stars so desperate to succeed in their home nation.

Uncertainty and confusion surrounding the Games has sadly reigned for the past year due to the coronavirus pandemic.

And yet, here we are in the month the action is set to begin and the show looks certain to go on.

No international spectators will be in attendance, but limited numbers of domestic fans are due to be allowed to watch the action.

So, who are the biggest names representing Japan the locals will hope to inspire to glory? Stats Perform has taken a look…

NAOMI OSAKA

There is no other place to begin than with one of the biggest names in the whole of sport, let alone tennis right now. Naomi Osaka is a superstar with a huge global following, particularly in Japan and America. Only 23 and with four grand slams to her name, there is seemingly no limit to the level she can reach. Osaka is the defending US and Australian Open champion, but withdrew after the first round of the French Open and opted not to play at Wimbledon after revealing a long-endured battle with depression. The issue came to the fore when Osaka had announced she would not take part in media conferences in Paris to protect her mental health, starting a wider conversation over how athletes are treated. 

HIDEKI MATSUYAMA

So often a nearly man, 2021 has already been a breakthrough year for the gifted Hideki Matsuyama. There were seven top-10 finishes in major tournaments before finally the 29-year-old took top billing to win the Masters at Augusta back in April. In doing so he became the first Japanese man to win a major tournament (Hinako Shibuno and Chako Higuchi have both won majors in the women's game). Olympic gold is certainly not out of the question for one of the most gifted players in golf.

KIYUNA RYO

Karate is making its Olympics debut and so is one of its greatest ever competitors in the form of Kiyuna Ryo. In 2019, Ryo won every competition he entered - including a third Asian championship - while the pandemic denied him a shot at a record fourth straight WKF world championship in June 2020. It will take a huge effort to stop Ryo, who will be 31 by the time the Games begin, standing atop the podium.

UTA ABE

The younger sibling of two-time world champion Hifumi Abe – himself off to Tokyo 2020 – judoka Uta Abe represents a serious medal hope for Japan. A two-time world champion herself in the -52kg category, she will aim to become an Olympic champion on July 25 – the same day her brother will aim to wear gold in the men's -66kg category. There is no shortage of judo talent in Japan, with Shohei Ono aiming to defend the -73kg gold he won at Rio 2016.

KENTO MOMOTA 

The past 18 months have been challenging for everyone but especially for Kento Momota. In January 2020, the badminton star was involved in a road accident that claimed the life of his driver, while he required surgery on his eye socket. A combination of the injury, the global pandemic and a positive test for coronavirus kept Momota off the court for 14 months. But the two-time world champion – who won an astounding 11 titles as recently as 2019 – will be desperate to complete a fairytale ending with gold in Tokyo.

DAIYA SETO

One of Japan's greatest hopes in the pool, Daiya Seto already has an Olympic medal in the form of a bronze from Rio four years ago in the 400 metre individual medley. With four gold medals in long course world championships and as many at the Asian Games, there are plenty of high hopes for Seto.

Richard Bland upstaged a star-studded field to earn a share of the U.S. Open lead at the halfway stage as defending champion Bryson DeChambeau soared up the leaderboard.

Unheralded Englishman Bland, 48, powered to the top of the summit at Torrey Pines thanks to his four-under-par 67 in San Diego, where he continues to prove patience pays off.

Alongside Russell Henley (70) for the one-stroke lead after two rounds, Bland is benefitting from perseverance, having gone almost 20 years without a European Tour title.

At the 478th attempt on the European Tour last month, Bland claimed an emotional win at the British Masters, which earned him a place in his fourth major championship.

Bland – who missed the cut at his one previous U.S. Open appearance in 2009 – dazzled on day two of this year's tournament, storming into the clubhouse lead before being joined by American Henley.

After opening with a 70, Bland holed seven birdies and three bogeys to catapult himself to the top of the standings, before Henley teed off in his second round, amid his improbable dream of clinching a major.

"I feel good about my game," said three-time PGA Tour champion Henley, whose previous best performance at a major came via an 11th-place finish at the 2017 Masters.

"I've never been in this position before in a major. Just feel like I'm going to learn something no matter what happens."

Louis Oosthuizen (71), who was the overnight co-leader along with Henley, ended day two in a tie for third position alongside Matthew Wolff (68), while Bubba Watson (67) and Jon Rahm (70) are a shot further back at three under through 36 holes.

DeChambeau boosted his hopes of back-to-back U.S. Open titles, though the big-hitting American star remains five strokes off the pace heading into the weekend.

A two-under-par 69 saw DeChambeau move to even par as he rose 47 positions into a tie for 13th alongside rival and two-time U.S. Open champion Brooks Koepka (73), Justin Thomas (69), Collin Morikawa (67), Harris English (70), Branden Grace (70), Christiaan Bezuidenhout (70) and Adam Hadwin (72).

Koepka – eyeing a fifth major crown – lost ground on the leaders after mixing five bogeys and just three birdies, while Rory McIlroy followed his opening-round 70 with a 73 to be one over the card as world number one Dustin Johnson (73) ended the day two over.

US PGA Championship winner Phil Mickelson emerged from the jaws of elimination, qualifying for the weekend via a two-under-par 69 after his forgettable 75 on Thursday.

Masters champion Hideki Matsuyama (76), Adam Scott (75), Sergio Garcia (74), Patrick Reed (73) and Jordan Spieth (69) all avoided the cut, but Justin Rose (77) was not so fortunate at 13 over.

Phil Mickelson and Brooks Koepka both shot 70 Saturday to set up a mouth-watering final pairing at the US PGA Championship. 

At seven under par for the tournament, Mickelson holds a one-stroke lead over his countryman entering the final round at Kiawah Island's Ocean Course after saving par on 18 while Koepka bogeyed the last. 

The 50-year-old Mickelson is the fourth player aged 50 or older to lead a major after three rounds in the modern era, which began in 1934. 

The others were Tom Watson at the 2009 Open Championship, Greg Norman at the 2008 Open, and Julius Boros at the 1973 US Open -- none of whom ended up holding on for the win. 

Mickelson has been resilient this week in South Carolina, though, steadying himself Saturday after going bogey-double bogey on 12 and 13 to make par on the final five holes. 

While Mickelson's resurgence has excited the fans, Koepka remains a model of consistency at the PGA.

He has finished at least tied for fourth in 12 of the last 13 rounds at the major, and he could become the first player to win the same major three times in a four-year stretch since Watson won the Open in 1980, 1982 and 1983.

Mickelson will be shooting for his sixth major title and first since the 2013 Open, while Koepka seeks his fifth. 

Louis Oosthuizen, who shared the lead with Mickelson entering play Saturday, managed just three birdies on the day on the way to an even-par 72 that left him five under for the tournament. 

American Kevin Streelman (70) is at four under, while Oosthuizen's South African countrymen Branden Grace and Christiaan Bezuidenhout are at three under after even-par rounds of their own. 

Bryson DeChambeau (71) was unable to gain ground on the leaders and enters Sunday five back of Mickelson along with Gary Woodland (72) and Joaquin Niemann (71). 

Jordan Spieth matched Billy Horschel for the low round of the day with a 68, and he sits at even par for the tournament along with Rickie Fowler (69) and Keegan Bradley (72).

Reigning Masters champion Hideki Matsuyama fell from contention with a 76, putting him at one over with the likes of Shane Lowry (73), Padraig Harrington (73) and Ian Poulter (73).