Justin Rose moved to the top of the leaderboard at the halfway stage of the Fort Worth Invitational thanks to his six-under-par 64.
Englishman Rose earned a one-stroke lead ahead of Emiliano Grillo following his near-flawless second round at Colonial Country Club Friday.
U.S. Open champion in 2013, Rose – who was four strokes off the pace at the start of play – carded seven birdies and a bogey to be 10 under through 36 holes in Fort Worth, Texas.
"I did a lot of good things today," Rose said. "I think, you know, the end of my round got a little scrappy, but until the last three holes it was pretty flawless. I think I hit every fairway pretty much and obviously every green to that point.
"The way I played through, I guess through my first 15 holes today, was about as good as I've played in a long time."
Argentina's Grillo recorded a 67 to be Rose's nearest challenger heading into Saturday's third round.
American Brooks Koepka (63) and Japanese golfer Satoshi Kodaira (67) are two shots further back at seven under.
Overnight leader Kevin Na (73) dropped to five under, in a tie for sixth alongside Tom Hoge (66), Alex Cejka (69), Ben Crane (69), Beau Hossler (71), Ben Silverman (69), Harris English (67), Kevin Tway (69) and Bryson DeChambeau (67).
Rickie Fowler backed up his opening-round 67 with a 69 Friday, which saw the American rise four positions to 15th.
Meanwhile, former world number one and three-time major winner Jordan Spieth is two strokes back at three under.
Spieth – the 2016 champion – birdied his final hole following a mixed round, which included five birdies and three bogeys.
|Johnstone grabs hat-trick as England ease past France|
|Pogba and Mourinho disagreement over Instagram video, confirms Pereira|
|Nuggets coach Malone signs contract extension|
|Mayweather accepts Khabib´s challenge: ´We´re fighting´|
|Slovenia sack Kavcic as head coach|
|Morgan and Rashid star as England win rain-reduced ODI in Sri Lanka|
|Romagnoli aims to make Gattuso proud in Milan derby|
|Naldo signs Schalke extension|
|Bills to start quarterback Anderson against Colts with Allen out|
|O´Sullivan makes 147 at ´hellhole´|
|Barcelona know when captain Messi is angry – Abidal|
|Bertens loss hands Pliskova last WTA Finals berth|
|Liverpool star Mane undergoes hand surgery|
|F1 Raceweek: Happy hunting ground for title-chasing Hamilton - US GP in numbers|
|Canelo signs record-breaking DAZN deal|
|England hit by another Vunipola injury absence|
|Gruden: Oakland Raiders ´aren´t tanking´|
|Chiesa focused and happy at Fiorentina|
|We´ll see what´s possible - Henry not limiting Monaco´s ambitions|
|Wembley sale off after Khan offer withdrawn|
|Football needs people like Arsene - Pires keen for Wenger return|
|Abbas five-for torments woeful Australia as Pakistan take control|
|Henry: Wenger and Guardiola inspirations for my coaching career|
|Pires backs Henry and Vieira for Ligue 1 success|
|Bolt rejects Valletta offer|
|Wenger ready for January return to management – but where?|
|NBA 2018-19: The LeBron James effect on teams he has joined|
|Svitolina qualifies for WTA Finals after Pliskova loses|
|Genoa will sell ´superstar´ Piatek, admits president|
|Moutinho targets European qualification with Wolves|
|Embiid: 76ers-Celtics isn´t a rivalry, they always kick our a**|
|Vinicius ´calm´ as he waits for Real Madrid chance|
|Nothing else to say - Ramos posts clip of supposed Sterling stamp|
|Chiellini joins Mind the Gap campaign to help players prepare for retirement|
|Injured Kusal Perera replaced by Kusal Mendis in Sri Lanka squad|
|Big names return for Scotland´s November Tests|
|Essien tells Loftus-Cheek to stay and fight for Chelsea chance|
|Nainggolan relishing challenge of first Milan derby|
|Curry: Slap me if I tire of championship celebrations|
|Sevilla don´t fear Messi or Barca – Kjaer|
|Low: Dropped Muller is still very important for Germany|
|Hayward put ´dark memories´ behind him with Celtics return|
|I hope I´m in Klopp´s good books! - Koeman jokes after resting Wijnaldum|
|Rested Fellaini should be fit for Manchester United, says Martinez|
|France´s mentality must be right - Lloris|
|Bellinger seals dramatic win as Dodgers level up NLCS|
|Curry, Durant lead Warriors past Thunder|
|Kjaer surprised by LaLiga-leading Sevilla as Machin´s men remain grounded|
|A-League preview: Honda the big arrival as fascinating season awaits|
|Mexico 0 Chile 1: Sanchez helps La Roja to late win|
|Celtics too good for 76ers in NBA opener|
|United States 1 Peru 1: Flores salvages late draw for visitors|
|Martinez not worried about Belgium depth|
|Red Sox move ahead of Astros in ALCS|
|Depay ´a joy to watch´, says Koeman|
|Timberwolves owner looking to trade Butler, backs Thibodeau|
|Shepard says Giants have ´total faith´ in Manning|
|Hazard is out of this world – De Ligt enjoys Belgium test|
|Tite: Brazil were better than Argentina|
|Foley eyes World Cup after re-signing with Wallabies, Waratahs|
|Low slams decisive France penalty call|
|I fined him for his goal at Old Trafford! Giggs delighted for Wales hero Wilson|
|Matuidi lauds Deschamps´ tactical nous after Germany win|
|Scaloni excited by Argentina despite Brazil loss|
|Tsonga back in business, Dzumhur dumped out in Moscow|
|Germany suffer six defeats in a year for first time|
|Many clubs have asked about Piatek - agent|
|Bartomeu: Barca open to defensive reinforcements after Vermaelen injury|
|Bonn spoil PAOK´s landmark European game|
|Konta conquers Mertens in Moscow|