J.J. Spaun holds the outright lead at halfway at the FedEx St. Jude Championship while 2022 Open Championship winner Cameron Smith made his move and Rory McIlroy and Scottie Scheffler missed the cut.

Spaun had shared the lead with Kim Si-woo after the opening day at TPC Southwind and backed that up with a three-under-par round of 67 to lead at 11 under after 36 holes. The American maintained his lead with five birdies along with two bogeys in his round.

Kim slid down the leaderboard after a three-over-par round with Sepp Straka, who finished with three straight birdies, and Troy Merritt in joint second at 10 under behind Spaun, with Denny McCarthy one shot behind them.

Merritt, McCarthy and Smith all carded five-under-par rounds of 65, with the latter moving up the leaderboard with birdies and an eagle on the par-five 16th hole.

The Australian is eight-under-par after two rounds, equal with Brian Harman, Tony Finau and Ryan Palmer.

Kevin Kisner is a further shot back after seven birdies highlighted his round of six-under-par 64, but that was bettered by both Tyler Duncan and Will Zalatoris.

Duncan and Zalatoris carded rounds of 63, with the former going bogey free and draining seven birdies to move into joint ninth.

Zalatoris had shot a first-day 71 but improved with seven birdies across a bogey-free round too, but is six under overall.

McIlroy headlined the list of names to miss the cut, with three bogeys holding him back, including one on the 18th hole, as he shot 69 to fall short by one stroke.

World number one Scottie Scheffler also failed to make the cut, despite an improved second round, not helped by a double bogey on the par-four ninth hole.

Kevin Kisner took advantage of warm and still conditions at St Andrews to surge up the Open Championship leaderboard, as low-scoring at St Andrews looked set to be order of the day.

American Kisner needed two birdies in his final three holes on Friday to reach level par, the cut mark, and he capitalised on an early tee time on day three to card nine birdies in a seven-under 65, moving at least briefly into the higher reaches of the leaderboard.

American Trey Mullinax and Italian Francesco Molinari also went low with six-under 66s, after both began on level par, while South African Dean Burmester had a 67 to reach five under through 54 holes.

Bryson DeChambeau was also surging into contention, reaching six under for his round through 13 holes, helped by an eagle at the ninth.

That put him alongside Kisner on seven under for the tournament, with Tommy Fleetwood joining them after picking up four shots through his first six holes.

Kisner, 38, proudly held the clubhouse lead and told Golf Channel the conditions had been ripe for going low.

"It was very benign earlier, hole locations a little more accessible and not playing as much wind as we've had the last two days, with it being pretty warm too," Kisner said.

"So the ball was going pretty far, and it felt like you were aiming right at the flag for the first time all week."

The afternoon forecast was for slightly stronger winds, with the possibility of showers, but the Old Course was giving the players great scoring opportunities and that looked set to continue, even if Kisner hoped a storm would brew up.

"I hope the winds blows like hell, and they can all shoot over par and I have a chance tomorrow, but I think there's a lot of birdies out there," Kisner said.

"The guys are really good golfers. Hopefully, they don't get too far away, and I can still have a chance."

Australian Cameron Smith held the lead through 36 holes on 13 under par, putting him two ahead of American Cameron Young, with Northern Ireland's Rory McIlroy and Norway's Viktor Hovland one back on 10 under.

Xander Schauffele shot his second consecutive 63 to head into the weekend at the Travelers Championship at 14 under – five strokes clear of the chasing pack.

Remarkably, Schauffele is yet to post a bogey in the tournament, with 14 birdies and 22 pars through his 36 holes.

He started beautifully in his second trip around TPC River Highlands, birdieing three of his first five holes, and capped off his round by birdieing the picturesque 17th hole for the second day in a row.

Schauffele was one stroke behind J.T. Poston and Rory McIlroy after Thursday's action, and tied for the round of the day on Friday along with Harold Varner III.

At 14 under, Schauffele has tied the TPC River Highlands 36-hole record, and it ties him with Justin Rose back in 2010 for the lowest 36-hole score at the Travelers Championship since 1984.

The five-man group tied for second place at nine under is made up of Americans Patrick Cantlay, Harris English, Nick Hardy and Kevin Kisner, as well as Australia's Cam Davis. Hardy and Kisner were the pick of that group on Friday, shooting 64s.

McIlroy and Poston sit one shot further back at eight under after the first-round leaders both shot even-par 70s, and are joined at eight under by a group including Lee Kyoung-hoon and Matthew NeSmith.

Webb Simpson is at seven under, rounding out the top-20, along with Michael Thorbjornsen, who is the only amateur to make the cut after rounds of 68 and 65.

World number one Scottie Scheffler is at five under, along with Varner, with the pair taking very different routes to that number. Scheffler has been consistent, with a 68 and a 67, while Varner has been the opposite, following his opening 72 with a 63.

With the cut-line at two under, Danny Willett and Mito Pereira were two of the players to miss out on the weekend despite being under par, while Sam Burns finished his week even, Jordan Spieth was one over, and the talented duo of Rickie Fowler and Joaquinn Neimann were at three over.

Scottie Scheffler is still coming to terms with his new status as the number one golfer in the world after victory in the WGC-Dell Technologies Match Play final on Sunday.

The 25-year-old was still waiting on his first PGA Tour win at the start of February but has sensationally come out on top in three of his five entries since.

His latest triumph, secured with a 4 and 3 win over Kevin Kisner in Austin, made him the 25th man to lead the Official World Golf Ranking since its inception in 1986.

Scheffler moved to 3 up by the sixth hole and scarcely looked in trouble throughout, ultimately sinking a putt for par on the 15th to claim victory.

Displacing Spain's Jon Rahm at the summit and with his family watching on from the side, the American acknowledged afterwards he was yet to truly realise the magnitude of his new status.

"[It is] pretty cool to do that in front of my family," Scheffler said. "They've supported me so much along the way, and I really don't know what to say about that.

"I don't feel like number one in the world. I feel like the same guy I was four months ago, and I hope that doesn't change. Yeah, I don't feel any different."

Scheffler came second in last year's WGC Match Play, losing 2 and 1 to Billy Horschel in a painful defeat that has since played on his mind.

"[There was] definitely a lot of emotion coming off the green," he said. "It's been kind of a crazy past few months.

"I got my first win in Phoenix, and then I guess this is my third now, and golly, what a long week.

"I really don't know how to describe the emotion. I've thought about winning this tournament ever since last year.

"It left kind of a poor taste in my mouth, getting so close and ultimately coming up short. So it feels really good to finish the job this time around."

Scottie Scheffler is the new number one-ranked golfer in the world after defeating Kevin Kisner 4 and 3 in the WGC Match Play final on Sunday.

The 25-year-old American has dethroned Spain's Jon Rahm to become only the 25th man to hold the top spot on the Official World Golf Ranking since its inception in 1986.

It is Scheffler's third professional tour win of the season, after triumphs at the Phoenix Open last month and the Arnold Palmer Invitational three weeks ago.

Kisner, the Match Play champion in 2019 when he beat Matt Kuchar 3 and 2, struggled to best his opponent, who went 1up off the second tee and subsequently never relinquished his lead.

Scheffler, who saw off a Dustin Johnson fightback to win 3 and 1 in the semi-finals, built a commanding early advantage through the sixth hole, emerging 3up with a dozen to play,

Neither man was able to get the better of the other until the 14th hole, when Scheffler shot a smart birdie against Kisner's bogey to move four up with just four holes remaining.

It left Kisner needing to win on the 15th to keep the match going, but the 38-year-old could not force the game on, and with just two putts needed for the title, Scheffler made no mistake on the green.

Scheffler, who had ranked fifth in the world heading into the Match Play, becomes the ninth American to top the men's world rankings, and the first new USA native to rank first since Brooks Koepka in 2018.

Elsewhere, Johnson missed out on a podium finish as the two-time major champion went down 3 and 1 to Corey Conners.

The Canadian held his nerve from the 12th hole onwards after dropping back to a two-hole lead to claim third place on the 17th hole with a birdie.

Scottie Scheffler survived a spirited fightback from Dustin Johnson to win 3 and 1 and reach the WGC-Dell Technologies Match Play final, where he will meet Kevin Kisner on Sunday.

Johnson made it past Brooks Koepka in a heavyweight last-16 clash on Saturday, but struggled in the early stages against world number five Scheffler at the Austin Country Club.

Scheffler produced three birdies in his opening four holes to go 3up and furthered his advantage on the eighth and 11th to take a five-shot lead.

Two-time major winner Johnson responded by claiming the next four holes – with Scheffler finding the water when inexplicably attempting to hit the green on the short par-four 13th – to tee up a thrilling finale.

Johnson then squandered a presentable birdie opportunity at the par-five 16th to fall two behind again before Scheffler secured victory on the following hole to reach his second consecutive Match Play final.

Victory in the final would also see Scheffler move to the top of the world rankings if he can defeat Kisner, who came out on top in a topsy-turvy clash with Corey Conners in the other semi-final.

The pair could not be separated as they repeatedly exchanged the lead through 16 holes before Kisner nudged ahead with a birdie on the penultimate hole as Conners pushed his putt wide in response.

Kisner, who lifted the Match Play trophy in 2019, delivered an expert chip with his second shot on the 18th to close out victory and ensure he remains in the hunt for the title.

Dustin Johnson got the best of Brooks Koepka in a heavyweight matchup to finish 2 up in their WGC-Dell Technologies Match Play quarter-final.

After Johnson got through Richard Bland and Koepka made it past Jon Rahm earlier on Saturday, the two former major champions went all 18 holes before Johnson won the last to turn 1 up into 2 up and avoid a playoff.

It was a great start for Koepka, winning two of the first three holes, but Johnson found his touch going into the seventh and went on to claim four holes and tie the rest from that point.

Scottie Scheffler passed his test against Seamus Power with flying colours, winning three and two with a strong back-nine.

Winning two holes apiece on the front nine, it was all Scheffler down the stretch, including winning the two par fives (holes 12 and 16) by two strokes to wrap things up with a couple holes to spare.