Justin Thomas eagled the par-five 18th hole to grab a share of the lead at the halfway mark of the Tour Championship in Atlanta on Friday.
Playing the difficult East Lake Golf Club, Thomas joined Webb Simpson (67) and Paul Casey (67) atop the leaderboard at seven under through the first two rounds.
Thomas, who is chasing his sixth win of the season, shot a four-under 66 in round two.
The US PGA Championship winner is projected to claim the FedEx Cup with his current standing this week.
Simpson had a three-shot lead entering the 13th hole, but he hit his tee shot well left and then struggled to get back to the fairway.
The American finally finished with a double-bogey six. He ultimately finished his round with five consecutive pars.
Casey started his second round with four birdies in his first 10 holes. Like Simpson, he stalled on the back nine but wound up in great shape heading into the weekend.
Patrick Reed (65), Justin Rose (66), Gary Woodland (67) and Jon Rahm (67) finished round two one shot back at six under.
Rahm still has the opportunity to win both the FedEx Cup and the European Tour's Race to Dubai.
Dustin Johnson (69) and current points leader Jordan Spieth (70) are tied for 15th with first-round leader Kyle Stanley (73) at three under.
In the FedEx Cup top five entering the season-ending event, Marc Leishman carded another 71 and is tied for 24th.
Rickie Fowler's struggles continued, the American shooting a 74 to slip further back to seven over – leaving him 29th in the 30-man field.
23. Juli 2018
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|Herath finishes off Proteas after maiden De Bruyn century|
|Hoeness hits out at Ozil after Germany retirement|
|Manziel traded to Montreal Alouettes|
|Pirates top Reds to extend winning streak to nine|
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|Harvick bumps Busch out of way for victory|
|Klopp hails Dortmund star Pulisic after Liverpool loss|
|Fellow pro reveals Open winner Molinari´s retirement plans|
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|Tamim fires Bangladesh to ODI success|
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22. Juli 2018
|My game is back - Spieth finds Open positives despite tough final round|
|Barcelona pay tribute to retiring Marquez|
|Blow for Thomas and Froome as Moscon is excluded|
|Woods earns WGC-Bridgestone Invitational place with rankings boost|
|Clay specialist Cecchinato lifts Croatia title on return to red dirt|
|Molinari´s safety-first masterclass yields deserved Open triumph|
|Alisson to link up with Liverpool at Evian training camp|
|Woods´ return no fluke, insists Spieth|
|Johnson shrugs off shoulder injury to win second 2018 title|
|The Open 2018 diary: Kane an able golfer, hats off to Hossler|
|Tiger and Serena will talk through Open disappointment|
|Molinari: It wasn´t about being ruthless to beat Woods|
|Tiger ´ticked off´ at missed Open opportunity|
|The Open 2018: Molinari triumphs - how a dramatic final round unfolded|
|McIlroy: Great to be back in the mix|
|Open victory will take a long time to sink in, says Molinari|
|Stoke sign McClean from West Brom for £5m|
|Masterful Molinari clinches sublime Open win after Spieth, Woods fall away|
|Germany´s Ozil retires from international football|
|Vikings OL coach Tony Sparano dies|
|BREAKING NEWS: Magical Molinari wins The Open|
|Dalic claims to be world´s second best coach|
|Twelve-try Wakefield batter Hull to send Rhinos into Qualifiers|
|Sevastova cruises to Bucharest title|
|Cort Nielsen sprints to first Tour stage win, Thomas maintains lead|
|Sarri needs support to deliver Chelsea success - Zola|
|Pjanic and Rugani in Juventus tour squad as Ronaldo and World Cup stars are rested|
|Eagle has McIlroy soaring into a five-way tie for the lead at Carnoustie|
|Vettel will not lose any sleep after Hockenheim mistake|
|I manifested my dream – Hamilton revels in Hockenheim win|
|Pakistan seal crushing series sweep of Zimbabwe|
|Furious Ozil accuses German media of turning country against him|
|Woods makes his move as Spieth and Schauffele wobble|
|Vettel crash sees Hamilton retake championship lead|
|RFEF confirms one-legged Supercopa de Espana in Tangier|
|Fognini downs Gasquet to clinch Swedish Open|
|Spieth and Tiger underway as Kisner falls back|
|Iniesta, Torres suffer defeats in their J.League debuts|
|Cornet ends title drought in Gstaad|
|Martial ´very focused´ at Manchester United - Herrera|
|Root, Williamson and Bairstow - hat-trick hero Clark flourishes in Roses battle|
|Sri Lanka spinning towards crushing series whitewash|
|Ozil explains controversial Erdogan meeting|
|It´ll be hard for Tuchel to get our players – Kovac expects Boateng stay|
|Fakhar Zaman fastest to 1,000 ODI runs|
|Neymar happy for World Cup winner Mbappe|
|I was born ready! - Bellew accepts Usyk challenge|
|Tuchel seeks Rabiot answers as Barca rumours persist|
|In-form Storm go top, Rampant Roosters thrash Manly|
|Bancroft discharged from hospital after taking blow to throat|
|MLS Review: Martinez breaks record as Atlanta march on|