Kang ties course record with 61, leads Nelson by 4

Competitors awoke Friday to an unusual situation at the AT&T Byron Nelson in Dallas: sweater weather.

It didn't matter to Sung Kang, the South Korean who now lives in nearby Coppell, Texas. He shot a 10-under 61 at Trinity Forest Golf Club in the second round to tie the course record set last year by Marc Fleishman the first time the course played host to the tournament.

Kang -- still seeking his first win on the PGA Tour -- holds the lead after two rounds at 16-under 126, getting some serious breathing room from his nearest competitors, Matt Every and Tyler Duncan, who are at 12 under.

"It's like perfect and awesome," Kang said of the cool and sometimes windy day at the wide-open course. "Nice conditions for a low score."

Kang admitted that 59, the PGA record for a round, did cross his mind, but he chose to play conservatively down the stretch rather than risk giving some shots back to the field.

"Conditions were so hard, you try to force it and the course is playing so tough out there," he said. "So, just try to get the opportunity, probably try to hit it within 15 feet and if I make the putt, good. If I don't, make par and get me going.

"I still think it was a great round."

Kang played a bogey-free round, birdieing the opening hole and closing out the front nine with five straight birdies. He made it six in a row with a birdie on No. 10. He birdied all three of the course's par-5s.

The weather seemed to be a bigger issue for many players.

At least Sweden's Henrik Stenson, who is at 6-under 136 and tied for 17th, was ready for it.

"Had four layers on and felt a little bit like the Michelin Man," he said after shooting a 2-under 69.

Dallas native Jordan Spieth was not. He had to call his wife and have her deliver some cool-weather gear after he got a dose of the conditions on the practice range.

"No excuses if you're in your hometown," he told reporters with a smile.

Spieth mixed seven birdies with a bogey and double bogey to finish the day 4 under. He is at 7 under through two rounds, in a tie for 10th.

Brooks Koepka is at 11 under after a 66 on Friday. Slovakia's Rory Sabbatini rounds out the top five, alone at 10 under after firing a 65.

--Field Level Media