Branden Grace carded a six-under 66 to take a one-shot lead after the opening round of the Texas Open.
The South African, who is without a top-10 finish this year, mixed seven birdies with a bogey in a fine start at the TPC San Antonio on Thursday.
Grace is top of a congested leaderboard, with a group of four players a shot behind him and another 13 at four under.
Americans Will MacKenzie, John Huh and Stewart Cink opened with 67s to be tied for second with New Zealander Steven Alker.
Mackenzie and Huh were runners-up at the PGA Tour event in 2014 and 2012 respectively.
Huh went through bogey-free and MacKenzie's only blemish came at the par-four 10th, while Alker birdied his final three holes.
Among those at four under and tied for sixth is Graeme McDowell, the 2010 U.S. Open champion having holed seven birdies and three bogeys.
Alongside him is Bob Estes, the 51-year-old American whose first of four PGA Tour wins came at the Texas Open in 1994.
Estes, who last won in 2002, made four birdies in a consistent opening round.
Steve Marino, Shawn Stefani, Luke List, Brooks Koepka, Noh Seung-yul, Tom Hoge, Jonathan Randolph, Robby Shelton, Ken Duke, Brian Gay and Bryce Molder are also at four under.
Defending champion Charley Hoffman made a decent start, carding a one-under 71 to be tied for 55th.
22 de junio 2018
|McLaren and Renault open to Ricciardo talks|
|We must win, we have no other choice - Maaloul|
|Germany will respond against Sweden, insists Low|
|´The best among all Asians´, South Korea trust in Son against Mexico|
|Stalin´s bunker an unlikely site for Russia´s World Cup charm offensive|
|England v Panama: Rashford tipped to start as Southgate´s side aim for last 16|
|Erasmus wary of ´wonderful´ Cipriani|
|Hummels to miss Germany-Sweden, confirms Low|
|Murray accepts Eastbourne wildcard|
|St Petersburg madness lines up Neymar and Brazil with heroes of the past|
|Martinez happy to be ´boring Belgium´|
|Japan v Senegal: Squeaky clean Group H rivals eyeing huge step towards last 16|
|Argentina team the worst in history - Ardiles|
|Ravanelli upsets wife by taking Arsenal job...in Kiev|
|Federer moves a step closer to 10th title in Halle|
|Brazil 2 Costa Rica 0: Coutinho and Neymar score in stoppage time to snatch win|
|Andersson: Sweden embracing big occasion as bug sweeps through team|
|LeBron in ´good dialogue´ with Cavaliers|
|Ronaldo will always be the best, Fonte claims|
|Southgate criticises press for England team leak|
|O´Mahony: Series win in Australia would be up there with Grand Slam|
|Khedira thrilled with Can capture, staying with Juventus|
|Samuel open to Higuain-Icardi swap deal|
|It´s just a game - Milligan disappointed by Kruse criticism|
|From drug-testing lab to gastro pub: Sochi happy not to forget dark past|
|Ronaldo will do what is best for him, says Carvajal|
|Kohli: India will feel at home in England|
|Barca target Lenglet yet to decide future|
|Germany perform best under pressure, Klose claims|
|Juanfran signs one-year Atletico Madrid extension|
|Julian Nagelsmann: The remarkable rise of RB Leipzig|
|Sterling: my daughter is Liverpool through and through!|
|Van Bommel to take charge of PSV|
|Hansen urges France not to ´squeal´ over decisions|
|Intelligent Jones will turn England´s fortunes around - Moody|
|Nainggolan confirms imminent Inter transfer|
|U.S. Open missed cut may be blessing in disguise - McIlroy|
|Schmidt in no rush to decide on his future|
|Wallabies treating decider as grand final - Hooper|
|Salah won´t leave World Cup, Egypt FA boss claims|
|Chandimal, Hathurusinghe and Gurusinha admit ´serious´ conduct breach|
|Mikal Bridges´ 76ers dreams dashed in dramatic draft twist|
|They want to pull you down - Sterling hits out at tabloid press|
|Lazaridis wants West Ham to stick with Mexico star Hernandez|
|Get behind Sterling, urges Henderson|
|Sampaoli begs for Argentina´s forgiveness|
|The 2018 NBA Draft first round in full|
|Everything still to play for against ´very strong´ France, says Eriksen|
|Cubs bested by Harvey, Yankees sweep Mariners|
|Spurs GM: We´ll do what we can to keep Leonard|
|Lovren: This Croatia team are better than 1998 heroes|
|Internationals Musa, Okobo selected in NBA Draft|
|Modric is the world´s best number 10 – Arbeloa|
|Kurz stay crucial to Jakobsen´s Adelaide move|
|Nuggets end Porter´s slide at number 14|
|Argentina were crying like girls – Vrsaljko|
|Cavaliers select Sexton with number eight overall pick|
|Argentina must ´pray´ results go their way, says Mascherano|
|Grizzlies select Jackson with number four pick|
|Hawks select Doncic with third pick, trade him to Mavericks|
|Kings take Bagley with number two pick|
|Suns select Ayton number one overall in NBA Draft|
|Argentina concerns grow as Dalic vows to rest players against Iceland|
|Messi could retire after World Cup, says Zabaleta|
|Spieth, McIlroy off to hot starts at Travelers Championship|
|Let Sampaoli say what he wants - Aguero angry at Argentina loss|
|Perisic: Messi is the best, but Argentina do not play as a team|
|Dominant England are ´spoiled´ by options, says Morgan|
21 de junio 2018
|Argentina squad ´clouds´ Messi´s brilliance, claims Sampaoli|
|Fagner to start for Brazil due to Danilo injury|