Jason Kokrak earned a record lead at the AT&T Byron Nelson as two-time major champion Jordan Spieth sensationally missed the cut.
Kokrak was the star performer on Friday after carding an almost flawless eight-under-par 62.
The American's performance saw him move five shots clear to 12 under atop the leaderboard – the greatest 36-hole lead at the PGA Tour tournament since David Love III's four-stroke advantage in 2000.
Billy Horschel (65) is second heading into the weekend, but world number one Dustin Johnson is lurking in Irving, Texas.
U.S. Open champion Johnson posted back-to-back 67s to be tied for third at six under following the second round.
Teeing off on the back nine, Johnson was flawless as he birdied the 18th before adding another three consecutive birdies from the fifth to the seventh at Four Seasons Resort and Club Dallas.
Johnson would have been five shots adrift had he not bogeyed his final hole.
An Byeong-hun (66), Cameron Tringale (68), Bud Cauley (67), overnight leader James Hahn (70) and Jhonattan Vegas (68) are also six under.
Former world number one Jason Day is nine shots behind Kokrak following his second-round 69.
Masters winner and defending champion Sergio Garcia posted a five-under-par 65 to be two under through 36.
However, it was a day to forget for Spieth after he farewelled the tournament.
Spieth fired a five-over 75 with a quadruple-bogey nine on the par-five 16th hole as he missed the cut for the third time in four starts.
Spieth was well inside the cut line before the implosion that forced him to re-tee twice.
30 de mayo 2017
|BREAKING NEWS: Roma part ways with Spalletti|
|Pjanic out to expose Real Madrid weaknesses|
|Astros complete historic comeback, Jays score 17 runs|
|Angels star Trout opts for thumb surgery|
|Stanley Cup Final: Penguins escape with crazy win in game one|
|Strootman: Totti could play for another five years|
|Vunipola tips Farrell as future Lions captain|
|Saul: United target Griezmann important but no one is above Atletico|
|Strootman always knew he would extend Roma contract|
|Unexpected reaction to mixed medication led to DUI arrest - Tiger Woods|
|Angels´ Trout facing surgery for torn thumb ligament|
|Iniesta refuses to commit to Barcelona|
|Harper, Strickland land punches in benches-clearing brawl|
|Royals starter Duffy expected to miss 6-8 weeks with oblique injury|
|Warriors boss Kerr will travel to Cleveland, but might not coach|
|Halfpenny ready for Lions kicking battle|
|Higuain: I have affection for Real Madrid rival Ramos|
|AFC Champions League Review: Al Ain hit six against Esteghlal as Al-Ahli defeat Al-Ahli|
29 de mayo 2017
|De Villiers confident heading into Champions Trophy|
|Mladenovic battles through the pain, Muguruza up and running|
|Tigers star Eden continues hat-trick streak, Smith feels the pressure|
|Eintracht Braunschweig 0 Wolfsburg 1 (0-2 agg): Vieirinha seals Bundesliga survival|
|Buffon deserves Ballon d´Or for current form, not past achievements - Chiellini|
|French Open Diary: Agassi falls short in fashion stakes as champagne flows in sweltering Paris|
|No worries for Nadal and Djokovic but Ferrer needs marathon to progress|
|I hope he calls it a day - Adams urges Wenger not to spoil Arsenal reign|
|Allegri not worried by Juve final record|
|ICC Champions Trophy 2017: The time is now for England to end hoodoo|
|Batting collapse a timely reminder for England - Morgan|
|Another promotion campaign daunting for defeated Stam|
|Nadal questions Wimbledon seeding system|
|Bayliss confident injured trio will be fit|
|The pundits wrote us off - Wagner hails Huddersfield´s fairytale promotion to Premier League|
|ICC Champions Trophy 2017: Your guide to the eight teams|
|The night Valverde embarrassed Barcelona|
|Managing egos, sorting the defence and playing the Barca way - Valverde´s Camp Nou challenges|
|Valverde named new Barcelona boss|
|Huddersfield Town 0 Reading 0 (aet, 4-3 pens): Ward the hero as Wagner´s men go up|
|Djokovic to pick Agassi´s brains after ´rusty´ start|
|Nadal eyes serving improvements after Paire victory|
|Chiellini: Juve better than 2015 Champions League final loss|
|ICC Champions Trophy 2017: Cummins, Stokes and Bumrah set to star|
|Tiger Woods arrested on DUI charge in Florida|
|Proteas avoid whitewash as Amla reaches another milestone|
|Azarenka hails ´warrior´ Kvitova|
|Strootman signs new five-year Roma deal|
|Solomona faces fitness test ahead of Argentina tour|
|ICC Champions Trophy 2017: Why West Indies´ absence could become the norm|
|Hogenkamp backs renaming of Margaret Court Arena|
|Red card earns Coetzee a five-week ban|
|Nadal begins historic French Open title bid in style|
|Djokovic starts new era with win over Granollers|
|Muguruza must ´earn confidence´ despite 2016 win|
|Pellegrino leaves Alaves after Copa final defeat|
|Bye for now - Hart departs Torino after loan spell|
|BREAKING NEWS: Ter Stegen agrees Barcelona renewal until 2022|
|Bartra feared for his career after Dortmund bus attack|
|Defending champion Muguruza overcomes defiant Schiavone|
|Dortmund confirm knee ligament damage for Reus|
|Calm down - Mendy cools talk of City move with Paris video|
|AC Milan losing patience over Donnarumma|
|Another thriller could help oft-threatened Champions Trophy survive|
|Ferrari foresight puts Vettel in command ahead of Hamilton fightback|
|Lions schedule is essential preparation, says former coach McGeechan|
|Terry eyes Wembley return as a manager|
|Stenson tips Noren for major success|
|Coman pondered Bayern exit|
|Gatland tactics will stifle Lions hopes, says England boss Jones|
|Four fans die after stampede ahead of Honduran final|
|Giro winner Dumoulin revels in unique place in history books|