Jordan Spieth birdied three of his last five holes to grab a three-shot lead after the third round of the Northern Trust.
Spieth began the day in a four-way tie for the lead, but he quickly broke out of that with four birdies in his first eight holes at Glen Oaks Club on Saturday.
Winner of this year's Open Championship, Spieth used a hot putter to separate himself from the rest of the field.
Spieth ultimately shot a six-under 64 to get to 12 under for the tournament, which is the first of this year's FedEx Cup Play-offs.
Dustin Johnson, who also started the day tied for the lead, shot a three-under 67 to get to nine under.
He finished round three with four birdies and one bogey. Johnson, still ranked world number one, has just one top 10 since injuring himself before the Masters.
Jon Rahm (67), Paul Casey (66), Matt Kuchar (68) and Patrick Reed (66) are all tied for third at seven under.
Casey, who often contends but has struggled to get over the hump and win, provided some insight into what he thinks it will take for him to be successful more often.
"Get rid of Jordan [Spieth] and Dustin [Johnson] from the top of the leaderboards," Casey said.
Keegan Bradley (66) is outright seventh at six under, a shot ahead of Kevin Chappell (64) and Justin Rose (69).
Rickie Fowler dropped out of contention after a 74 left him at two under and alongside the likes of Jason Day (68) and Henrik Stenson (67) in a tie for 22nd.
Rory McIlroy continued his recovery with a one-under 69 getting him back to even par.
21 de agosto 2018
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20 de agosto 2018
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|I couldn´t care less - Klopp rejects title challenge talk|
|Ailing Bairstow keen to aid England´s unlikely victory bid at Trent Bridge|
|Redskins secure Peterson signing|
|Manchester City goalkeeper Bravo suffers ruptured Achilles|
|Crystal Palace 0 Liverpool 2: Milner and Mane secure victory at Selhurst Park|
|Whyte takes aim at ´coward´ Fury ahead of Wilder showdown|
|Jets delighted with Darnold, open to trading Bridgewater|
|Gasly to replace Ricciardo at Red Bull|
|Valencia 1 Atletico Madrid 1: Rodrigo strikes to deny Simeone´s side|
|Injured Halep withdraws from Connecticut Open|
|Cipriani fined £2,000 by Gloucester|
|Mourinho will be sacked before Christmas, says Sharpe|
|England face record chase after Kohli smashes India to huge lead|
|Ozil captaining Arsenal a miracle - Hoeness|
|Japan players apologise for ´thoughtless, careless´ actions at Asian Games|
|Henry wants Bordeaux job, Wenger confirms|
|Pogba too inconsistent and not a leader, claims Scholes|
|PCB chairman Sethi resigns in letter to Pakistan prime minister Imran Khan|
|US Open comes too soon for Tsonga|
|Unpredictable results making 2018 F1 season a classic - Wolff|
|Mendy restricts phone use on Guardiola advice|
|Modric brands Inter approach claim ´the greatest nonsense in history´|
|Runners and Ryders: Olesen leapfrogs Poulter into last Team Europe berth|
|Kenedy escapes further action over Camarasa kick|
|England´s Bairstow suffers ´small fracture´ to finger|
|Gonalons joins Sevilla on loan from Roma|
|Modric, Ronaldo and Salah final UEFA Player of the Year nominees|
|Tottenham to play opening Champions League home match at Wembley|
|Karius´ Champions League blunders did not lead to Alisson signing - Klopp|
|Leeds considered €20m Conte offer before turning to Bielsa|
|Modric, Rakitic lead new era for World Cup finalists Croatia|
|Storm´s Chambers banned for three weeks, Smith injury not serious|
|Porte to race Vuelta after recovering from Tour crash|
|The Career Golden Masters: A run-down of Djokovic´s magnificent record|
|Japan send home four basketball players from Asian Games amid prostitution scandal|
|Rugby tackle bags helping Liverpool´s Alisson with Premier League life|
|Federer raring to go at US Open after Djokovic defeat|
|Chelsea boss Sarri plans to give up smoking|
|Alonso´s Toyota team stripped of Silverstone victory|
|Ceballos: No issue with former Real Madrid boss Zidane|
|MLS Review: Martinez equals single-season goalscoring record|
|Astros avoid sweep with win over Athletics|
|Seppi advances, Paire exits Winston-Salem|
|Bale feeling good as Madrid eye sweep of trophies|
|You can´t leave a house three-quarters built – Neville urges United to back Mourinho|
|Dodgers slugger Machado leaves game after being struck by pitch|
|Harden says Carmelo will ´be a good fit´ for Rockets|
|Morata: I never considered Chelsea exit|
|Gavrilova kicks off title defence in New Haven|
|Lopetegui pleased with Bale and Real Madrid after LaLiga opener|
|It´s a very special moment – Djokovic revels in Golden Masters achievement|
|Sorrentino thanks Ronaldo for support after injury|
|Twins place Santana on DL with finger injury|
|Yankees´ Gregorius suffers ´pretty significant´ heel bruise|