Adam Svensson shot a blistering 10-under 62 in the first round of the Barbasol Championship to lead the field by two strokes.

Canada's Svensson is taking advantage of the fact that most of the sport's biggest names are spending this week at the Scottish Open, posting seven birdies, two eagles and bogey in his round. On the four par-fives, he collected two birdies and two eagles.

Speaking to The Golf Channel after his round, he said he felt in good touch coming into the event.

"I was on the range today and I was feeling really good," he said. "I've been putting well, putting a lot of work in that. 

"It just kind of all came together today. I made two nice eagles. The one on eight was exceptional – made a 30-footer – but was just trying to stay in there because it was just so hot. 

"I was losing energy, I was trying to hydrate and stuff like that. I was just really relaxed and just tried to get through the day essentially."

Being a co-sanctioned event from both the PGA Tour and the DP World Tour, there was a strong international contingent near the top of the leaderboard.

Tied for second place at eight under are Portugal's Ricardo Gouveia and France's Robin Roussel, with the latter managing to go bogey-free.

There is an eight-man logjam tied for fourth at seven under, including Germany's Matti Schmid, Colombia's Camilo Villegas and England's David Skinns.

Another pair of Englishmen – Tom Lewis and Andrew Wilson – were a further shot back at six under, along with Australia's Cameron Percy, South Africa's Justin Walters and Germany's Yannick Paul.

Japan's Satoshi Kodaira, Chile's Hugo Leon and Sweden's Niklas Lemke are at five under, while Spain's Alejandro Canizares and South Korea's Noh Seung-yul shot four-under 68s – one stroke better than Thursday's average score.

After a top-10 finish at last week's John Deere Classic, Canada's Michael Gligic will be content with his opening 69, while John Huh shot a 70 as he looks for his third top-15 finish from his past five starts.

Colombian Camilo Villegas got the jump on the field on the opening day of the Texas Open after shooting an eight-under 64 with Jordan Spieth among those not far behind.

After starting on the back nine with a bogey, Villegas hit six birdies in seven holes, including sinking a 20-foot putt on his 13th to claim a solid lead at TPC San Antonio's Oaks Course on Thursday.

Villegas is two shots ahead of South Korean Sung Kang and American Cameron Tringale who both had a 66.

Three-time Major winner Spieth is equal third on 65, alongside Noh Seung-Yul and Hideki Matsuyama.

"Sometimes it goes your way, and sometimes it doesn't," Villegas said. "The last few years I've been up and down with many things. We keep showing up and the results start showing up."

Three-time Masters champion Phil Mickelson had a nightmare when he had a 10 on the par-five 18th to finish the day 15 shots back to end up 79.

Mickelson took two penalty shots and another three strokes trying to navigate a greenside stream and nearby rocks on the last and faces a battle to make the cut.

Kang started slow but hit an eagle on his 11th hole, jarring a 30-foot putt after two fantastic set-up shots on the par-five. He birdied three of his final four holes.

"I struggled a little bit with a new driver from the start, but I found a way to hit it on the back nine so started driving a lot better," Kang said.

Tringale made seven birdies including four on the back nine to finish with his six-under 66 to be firmly in contention.

Spieth had seven birdies and two bogeys in his round, including a bright start where he birdied three of his first five.

The Texan, who is now ranked 67th, is looking for his first win since the 2017 Open Championship.

"Overall with the score, I certainly would have signed up for five-under starting out," Spieth said.

"Five-under around this track is a good score. I'd take four more of them."

Matsuyama rolled in a 25-foot birdie putt on the eighth as he put together a strong round along with Noh, who is yet to make a cut this season.