Rory McIlroy will enter next week’s BMW Championship play-offs event in the US at his lowest world ranking for more than three years.
The four-time major winner has slipped from fourth to sixth in the rankings after missing the cut at the Dell Technologies Championship in Boston.
Winner Justin Thomas and Spain’s Jon Rahm have both moved above McIlroy.
The last time McIlroy was ranked so low was when he occupied eighth spot before his Open Championship win in 2014.
McIlroy, 28, has played only 15 events in an injury-plagued season and plans to play three more tournaments before taking several months off to fully recover from a lingering rib injury.
However, he has slipped to 51st in the FedEx Cup standings and needs a good performance in the BMW Championship at Conway Farms in Illinois to climb into the top 30 and qualify for the Tour Championship.
McIlroy defeated Ryan Moore and Kevin Chappell in a play-off in Atlanta 12 months ago to win the overall FedEx Cup title, which landed him a £7.8m bonus.
The Northern Irishman is keen to avoid just his second full winless season since turning professional and plans to contest the pro-am format Dunhill Links Championship in Scotland with his father Gerry in early October before calling time on a frustrating campaign.
Spieth then joined leader Leishman, but both made bogeys as Thomas holed birdies on 13 and 15 to move clear.
The American shot a final-round 66 to finish on 17 under, with Spieth second and Leishman third on 13 under.
Spieth, who shot a final-round 67, now leads the FedEx Cup standings with 5,071 points, going into the BMW Championship – the third of four play-off events. Compatriot Thomas is in second spot with 5,044 points.
Paul Casey went around the course at TPC Boston in 70 to end the tournament tied fourth on 12 under, two strokes ahead of fellow Englishman Justin Rose, who shot a 68.
World number one Dustin Johnson, who was the FedEx Cup points leader going into the tournament, finished on seven under, tied for 18th. He is third in the FedEx race with 4,650 points.
In January, Thomas became the youngest man to break 60 on the PGA Tour when he carded an 11-under 59 at the Sony Open in Hawaii, and in June he was the first man to shoot a nine-under-par round at the US Open.
He won his first major in August when he clinched the US PGA Championship – he was embraced by three-time major winner Spieth after coming off the final green.
The Dell Championship was the second of the four FedEx Cup play-off tournaments. The field will be cut from the top 100 points leaders to just the top 70 for the BMW Championship, starting on 14 September.
The final event is the Tour Championship (21-24 September) which features the top 30 points scorers. The winner of 2017 the FedEx Cup will collect a prize of $10m (£7.73m).
“You can’t really compare but in terms of ball-striking that was right up there. I drove it better than I have all year,” he said.
Rahm began in assured fashion with a birdie from eight feet at the first but briefly lost the lead after dropping a shot at the next when his approach found the water hazard. His closing two-putt birdie at the par-five 18th was the only shot he gained in his final 11 holes.
American Kyle Stanley led after three birdies in his first four holes but three shots went in the next two and he finished in a tie for 19th at five under.
Garcia forced to make putter change
Masters champion Sergio Garcia, who began round three on two under, smashed his putter against a sprinkler head in exasperation at the fourth hole and opted to putt with his three-wood.
He holed his first attempt with it from 14 feet for a birdie but he then switched to a driver and took 12 putts in the next five holes.
The Spaniard then switched to putting with a three-iron but his unhappy day finished with a double bogey and a 75 which left him at two over for the tournament.
-13 H Porteous (SA); -11 L Slattery (Eng); -10 P Widegren (Swe), T Lewis (Eng); -8 O Lengden (Swe), J Morrison (Eng), E Pepperell (Eng), J Scrivener (Aus)
Selected others: -7 L Westwood (Eng); -3 J Donaldson (Wal)
South African Haydn Porteous secured his second European Tour title with a two-stroke victory in the Czech Masters at the Albatross Golf Resort in Prague.
The 23-year-old world number 389 began the final day two behind Lee Slattery but a three-under 69 took him 13 under.
Slattery, 39, who won the last of his two European Tour events in 2015, returned a 73 to finish in second spot.
Former world number one Lee Westwood, now ranked 59th, returned a 68 and shared ninth place, six strokes back.
Slattery’s overnight lead was quickly eroded as Porteous birdied the first two holes, but the South African bogeyed two holes in succession from the 10th, allowing the Englishman to regain the lead with his second birdie of the day on the 13th.
However, Porteous immediately hit back to birdie the next and sent his tee shot to within two feet of the pin for another on the dangerous par three 16th.
Slattery had dropped a shot on the 15th after finding a bunker off the tee, but also birdied the 16th to keep up the pressure before making a bogey on the last when his approach drifted left of the green.
Porteous won the Joburg Open in January 2016, but a missed cut in last year’s Czech Masters was the first of 14 early exits in 16 events and he admitted: “It’s been a really torrid time.
“When you start playing on the European Tour you start to lose yourself, you lose how you got out here in the first place. To then find yourself again is key and I can’t thank my sponsors enough for helping me through thick and thin.
“I’m sure this evening’s not going to be the most professional moment of my life, but there’s nothing wrong with having a bit of a celebration!”
-9 J Rahm (Sp); -7 A Hadwin (Can), P Casey (Eng), K Stanley (US), K Streelman (US); -6 G Murray (US), P Mickelson (US), B DeChambeau (US), M Leishman (Aus)
Selected others: -5 J Rose (Eng), J Spieth (US); -4 D Johnson (US), J Thomas (US); -2 S Garcia (Spa); -1 H Matsuyama (Jpn); +2 R Knox (Sco), I Poulter (Eng), J Day (Aus); +4 R McIlroy (NI)
Defending champion Rory McIlroy missed the cut by a single shot at the Dell Championship in Boston.
The 28-year-old world number four from Northern Ireland, without a win in 2017, had four bogeys and a double bogey in a 74 for a four over total.
Spaniard Jon Rahm birdied five of his final eight holes in a 66 and leads by two strokes at nine under.
First-round leader Dustin Johnson, the world number one, had two double bogeys in a 72 and is five shots adrift.
Masters champion Sergio Garcia, one behind Johnson after the opening round, made only one birdie in a two-over-par 73 that left him at two under for the tournament.
Open champion Jordan Spieth had seven birdies in a 65 and is in a share of 10th place only four shots back.
American Kyle Stanley, the world number 58, was within a shot of Rahm’s lead but three-putted his final hole and shares second spot with Englishman Paul Casey – who had eight birdies in a 65 – Canada’s Adam Hadwin and American Kevin Streelman.
There were two holes in one in as many minutes during round two, Grayson Murray at the eighth and Lucas Glover at the 16th.
Murray is six under and his ace came during a stretch of six holes that also contained three birdies, a double bogey and a bogey.
The top 70 after Monday’s final round advance to the penultimate event in this year’s FedEx Cup series, the BMW Championship, be played at Conway Farms in Lake Forest, Illinois from 14-17 September.
-12 L Slattery (Eng); -10 H Porteous (Rsa); -8 P Widegren (Swe); -7 C Hanson (Eng), J Thomson (Eng)
Selected others: -6 C Shinkwin (Eng)
England’s Lee Slattery will take a two-shot lead into the final day of the Czech Masters.
Slattery carded a third-round 67 at Albatross Golf Resort to finish 12 under par, with South Africa’s Haydn Porteous his nearest challenger on 10 under after a matching 67.
Sweden’s Pontus Widegren is two shots further back on eight under.
Halfway leader Chris Hanson is a further stroke adrift alongside fellow Englishman Jonathan Thomson.
Hanson had led an English one-two-three after the completion of the delayed second round, the 32-year-old playing 17 holes in five under par to add a 66 to his opening 68.
That gave him a three-shot lead over Slattery, and birdies on the first two holes of round three quickly took Hanson four shots clear.
However, driving into a hazard on the sixth cost Hanson a double bogey and when he dropped another shot on the eighth, Slattery took full advantage with birdies on the seventh and ninth to move into the lead.
Chris Hanson led an English one-two-three as the second round of the weather-affected Czech Masters was completed on Saturday.
Hanson had birdied his first hole of the day to lie two shots behind clubhouse leader Lee Slattery when play was suspended on Friday afternoon.
The 32-year-old added a six-under 66 to his opening 68 for a halfway total of 10 under par, three ahead of Slattery.
James Morrison was a shot further back on six under.
First-round leader, England’s Callum Shinkwin, fell seven shots off the pace after a second round of 75, with pre-tournament favourite and 2015 champion Thomas Pieters part of a 15-strong group on two under.
That group also included Wales’ 2014 winner Jamie Donaldson and American defending champion Paul Peterson, who both shot 73, as well as Ryder Cup team-mates Lee Westwood and Matt Fitzpatrick.
The final group including Hanson, Slattery and Morrison were due to start their third rounds at Albatross Golf Resort on Saturday afternoon.
-5 D Johnson (US); -4 K Stanley (US), M Leishman (Aus), S Garcia (Sp), J Rahm (Sp); -3 K Na (US), L List (US), B Harman (US), J Dufner (US), J Blixt (Swe), G Murray (US)
Selected others: -2 P Mickelson (US), R Fowler (US); -1 P Casey (Eng); level A Scott (Aus), J Thomas (US), I Poulter (Eng); +1 J Spieth (US), R Knox (Sco), R McIlroy (NI), H Matsuyama (Jpn); +3 M Laird (Sco), B Koepka (US); +4 J Day (Aus)
World number one Dustin Johnson carded a five-under 66 to take a one-shot lead after the first round of the Dell Championship at TPC Boston.
Masters champion Sergio Garcia shares second after six birdies in his 67.
Defending champion Rory McIlroy, without a victory this year, took three putts from three feet in a 72.
The tournament is the second of the four FedEx Cup events, with the top 70 after Monday’s final round progressing to Lake Forest in Illinois next week.
Starting at the 10th, Johnson holed from 35 feet for birdie on his opening hole, the first of his five birdies, and hit a seven-iron approach from 220 yards to four feet to set up an eagle on the par-five ninth.
Playing partners Spieth and Justin Thomas, Open and US PGA champions respectively, were much further down the leaderboard.
Spieth was three over par for his first seven holes before finishing with a 72, while Thomas had 16 pars, one birdie and one bogey in a level par round.