Luke List has had a long wait for his first PGA Tour win and that was extended after a two-hour wait before triumphing in a playoff over Will Zalatoris at the Farmers Insurance Open on Saturday.

The 37-year-old American, enjoyed an excellent final round six-under-66, highlighted by four consecutive birdies from the third to the sixth holes, to storm up the leaderboard at Torrey Pines.

But List, in his 206th career start, waited almost two hours after entering the clubhouse as the overnight leaders completed their rounds before facing Zalatoris, who also finished 15-under overall, in an 18th hole playoff.

In fading light, the pair both landed their tee shots within inches of each other in a bunker, with List's third shot placed close to the hole, enabling him to tap in to card a birdie.

Zalatoris pushed his longer birdie putt, which was near-identical to his 18th hole putt for victory that he missed, wide left again to settle the playoff in List's favour.

California-born 25-year-old Zalatoris may have clinched victory on the 18th as List patiently waited and practiced elsewhere, but was agonizingly short and slightly wide after a late fade on his putt.

He carded a final round one-under-71, grouped alongside Jason Day and Aaron Rai, with world number one Jon Rahm also making a late charge.

Day shot into a share of the lead after landing an eagle on the 14th hole but had to settle for joint third alongside Rahm and Cameron Tringale at 14-under-par overall.

The Australian, who had not won a PGA Tour title in 1,364 days, finished with back-to-back bogeys to slip from contention.

Rahm rolled in a clutch 26-foot putt to birdie the 17th to be one shot off the pace but only managed par on the last hole.

Joaquin Niemann, Justin Rose, Pat Perez, Sungjae Im and Rai were next, finishing 13-under overall.

Will Zalatoris goes into the final round of the Farmers Insurance Open with a first PGA Tour win in his sights after a superb performance on day three.

Zalatoris claimed a share of the 54-hole lead with Jason Day thanks to a seven-under-par 65 at Torrey Pines.

That took him to 14 under, level with 2015 US PGA Championship winner Day, who carded a 67.

Zalatoris had started the day six strokes adrift of midway leaders Jon Rahm, Justin Thomas and Adam Schenk.

But an eagle at the par-four second gave him early momentum and five further gains followed in a blemish-free round for last season's Rookie of the Year.

That eagle featured a 338-yard tee shot as a day Zalatoris described as perhaps the best with the driver "maybe ever" put him in position to push for a maiden tour win.

Asked how much distance he has gained following a switch to a 46-inch driver, Zalatoris replied: "Twelve yards, I've clocked it up to 127 [mph clubhead speed] and have 186 ball speed so, around here, that's huge.

"Obviously you've seen what Bryson [DeChambeau] has done, you won't be seeing me at 220 [ball speed] anytime soon but definitely the added distance has really paid dividends."

Along with Day, Zalatoris still has Rahm in his rear-view mirror, a level-par 72 keeping him at 13 under, tied for third with Aaron Rai.

Rahm carded a double bogey at the 10th and lost another shot at the 12th, but he will hope his experience of winning the U.S. Open at Torrey Pines last year can help him recover on Saturday.

Thomas, meanwhile, carded a one-over 73 and has Cameron Tringale and Sungjae Im for company on 12 under.

Adam Schenk carded a 10-under-par to surge into a share of the lead alongside top-ranked Jon Rahm and Justin Thomas at the halfway mark of the Farmers Insurance Open on Thursday.

Schenk, who is ranked 54th and has never won a PGA Tour title, carded a career-best PGA Tour round of 62, which included making 10 birdies and hitting four of 14 fairways.

The American, who turned 30 on Wednesday, made eight consecutive birdies was within one shot of equaling the course record, with his 15-feet putt on the 18th hole lipping out.

Reigning US Open winner Rahm, who opened the tournament with a six-under-par 66, backed up with a seven-under-round on the second day on the North Course at Torrey Pines.

World number six Thomas is locked with Schenk and Rahm at 13-under overall after his nine-under round.

The trio lead from Cameron Tringale at 12-under, with Peter Malnati next with 11-under.

Opening day leader Billy Horschel slipped down the leaderboard after a one-over round to be eight-under overall.

Will Zalatoris, who started and finished the second day with eagles, is among a group of six at seven-under including Dustin Johnson.

Phil Mickelson, Bryson DeChambeau, Jordan Spieth, Rickie Fowler, Tony Finau and Brooks Koepka were among the notable players to miss the cut.

Spieth's four-over card ended his run holding the longest active made-cut streak (20) on the PGA Tour.

Billy Horschel leads the way after the opening day of the Farmers Insurance Open in San Diego with world number one Jon Rahm the best of the big names in the field.

Horschel leads by one stroke from Michael Thompson after the 35-year-old American carded a bogey-free nine-under-par 63 on the North Course at Torrey Pines.

World number 23 Thompson also went bogey free on Thursday, birdieing four of his first five holes to jump out of the blocks, before birdies on the 17th and 18th holes rounded out a strong day.

Stephan Jaeger and Kevin Tway are seven-under-par, with Rahm on six-under-par alongside three others players; Rickie Fowler, Doug Ghim and Francesco Molinari.

Rahm's round on the South Course included two bogeys and six birdies but he jumped up the leaderboard with an eagle on the 18th.

Sam Burns, Daniel Berger and Tony Finau are among a group of players tied at five-under while Justin Thomas started with a four-under-par 64 but had five birdies on his front nine before two bogeys in his final five holes.

Tokyo Olympics gold medallist Xander Schauffele and 2020 Masters champion Dustin Johnson are also four under.

A bleach-blonde Brooks Koepka had two bogeys and four birdies to be two under, alongside three-time major winner Jordan Spieth and 2020 US Open champion Bryson DeChambeau.

Patrick Reed clinched the Farmers Insurance Open title with a dominant five-stroke triumph at Torrey Pines.

Reed carded a four-under-par 68 in the final round to claim the largest margin of victory of his career on Sunday.

American star Reed and Carlos Ortiz had shared the lead heading into the deciding day in San Diego, where the former starred on the South Course.

Reed posted an eagle, three birdies and a bogey to be 14 under overall for his ninth PGA Tour trophy – with his 2018 Masters success among the honours.

The victory marked the 50th top-10 performance of Reed's Tour career. The last five players to reach that milestone with a win also include Jason Day (2016), Bubba Watson (2016), Rocco Mediate (2002) and Phil Mickelson (2000).

"My biggest takeaway was mentally, I hung in there and stayed the course," Reed said afterwards, following a rules furore on Saturday.

"... We felt like we did [the right thing], the rules officials felt like they did that at the same time so with that being said I felt fine, I felt great throughout the day. And at the end of the day, I wouldn't have felt any other way.

"I was able to shoot a low number [Sunday] and get the job done."

Tony Finau (69), Henrik Norlander (69), Ryan Palmer (70), Xander Schauffele (69) and Viktor Hovland (71) finished tied for second, while Will Zalatoris (71), Lanto Griffin (72) and John Rahm were a stroke further back and six shots behind.

Four-time major champion Rory McIlroy faded as he ended the tournament in a share of 16th position at six under.

McIlroy's final-round 73 included a double-bogey, two bogies and three birdies in a mixed bag for the Northern Irish star.

Patrick Reed and Carlos Ortiz will take a share of the lead into the final round of the Farmers Insurance Open.

Ortiz produced the best round of the day on the South Course at Torrey Pines on Saturday as the Mexican carded a six-under 66.

He was two under through 12 holes in his third round before producing a blistering finish, which included four birdies on his final six holes.

Ortiz moved into 10 under to share a two-stroke lead with Reed, who managed a 70.

Reed endured a rollercoaster round with an eagle and three birdies on the front nine, but he needed a bridie at the last to share the lead after four bogeys between 11 and 16.

The American was involved in some controversy at the 10th hole, where he sought relief for an embedded ball that replays showed had first bounced, and the 2018 Masters champion picked it up before the rules official arrived.

Asked if in hindsight he would pick the ball up before the rules official was there, Reed told CBS: "Yes.

"Because you sit there and when you have three players, including yourself, three caddies and a volunteer that's within five yards of that golf ball and no-one says it bounced, you're going to mark it and check to see if the ball is embedded. That's what every player does.

"If no-one sees it bounce, they see that it looks like it's broken the plain in the ground, you mark the ball and you pick it up first and then when you see that it is embedded that's when you always call the rules official over, no matter what you're doing, to take the drop to make sure you're doing the drop correctly."

Jon Rahm is one of five players tied for third at eight under after the Spaniard carded an even-par 72 in the third round.

Alongside Rahm are Sam Burns (70), Lanto Griffin (72), overnight leader Viktor Hovland (73) and Adam Scott (72).

Rory McIlroy remains in contention after shooting a 70 that sees him sitting alongside Sam Ryder (69), Will Zalatoris (70) and Ryan Palmer (73) at seven under.

Viktor Hovland finished strongly to claim a one-stroke advantage at the halfway stage of the Farmers Insurance Open, where Brooks Koepka and Jordan Spieth missed the cut.

Hovland birdied his final hole in Friday's second round to card a seven-under-par 65 and top the leaderboard heading into the weekend at Torrey Pines.

Battling rain, hail and wind – which halted proceedings in the second round – Norwegian golfer Hovland managed to rise 47 positions to lead a star-studded field thanks to eight birdies and just one bogey on the South Course.

The 23-year-old – winner of the Puerto Rico Open and Mayakoba Golf Classic on the PGA Tour last year – is nine under through 36 holes, ahead of 2017 champion Jon Rahm (67), Adam Scott (69), Tony Finau (67), Lanto Griffin (70), Ryan Palmer (70) and Patrick Reed (72).

Alex Noren (74), who was tied for the overnight lead alongside Reed, fell into a share of 11th, three shots off the pace.

Four-time major champion Rory McIlroy is a stroke further back following his one-under-par 71 on the North Course.

McIlroy mixed four birdies with three bogeys to be tied for 14th position along with Will Zalatoris (71), Jason Kokrak (69), Adam Hadwin (70), Rory Sabbatini (67), two-time winner Brandt Snedeker (70) and Max Homa (68).

Defending champion Marc Leishman posted a second-round 70 to be three under overall, two strokes better off than rallying veteran Phil Mickelson (72).

Mickelson was on the cusp of missing the cut during the rain delay, but the five-time major champion holed back-to-back birdies to qualify for the weekend.

Former world number one Spieth (75) missed the cut as his bid to win for the first time since 2017 continues.

Koepka's 76 saw the four-time major winner also miss the cut, along with two-time Farmers Insurance Open champion Jason Day (72).

Patrick Reed and Alex Noren carded eight-under 64s to share the lead after the opening round of the Farmers Insurance Open.

Reed, who missed the cut at last week's The American Express, produced a bogey-free first round on the North Course at Torrey Pines on Thursday.

The American made three straight birdies after starting his round at the 10th and had another run of three straight on his back nine, tying the second-lowest first-round score of his PGA Tour career.

Reed shares a one-stroke lead with Noren, the 2018 runner-up who also fired a 64 on the North Course.

A former top-10 player, Noren has dropped to 96th in the rankings after going winless since 2018.

Scottie Scheffler is outright third after his 65, while 12 players opened with 66s – with only Peter Malnati and Ryan Palmer, who was runner-up alongside Noren three years ago, playing the South Course of that group.

K.J. Choi, 50, is also among that group after a bogey-free round that featured six birdies, as the two-time runner-up – whose last win was in 2012 – surprised.

Beau Hossler, Talor Gooch, Luke List, Sam Burns, Gary Woodland, Lanto Griffin, Rhein Gibson, Cameron Smith and Brandon Hagy are also tied for fourth.

Rory McIlroy made a solid start with a four-under 68 on the South Course, while 2017 winner Jon Rahm and Jordan Spieth opened with 69s.

Brooks Koepka is in a tie for 88th after an even-par 72, while two-time champion Jason Day endured a tough opening round, mixing a double bogey with six bogeys and four birdies to shoot a 76.

Richy Werenski, meanwhile, carded a 69 that included a hole-in-one at the third hole on the South Course, having also managed an ace in the final round of last year's event.

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