LAS VEGAS (AP) — Jhonattan Vegas and William McGirt shot career-best 8-under 63s on Thursday to share the first-round lead in the Justin Timberlake Shriners Hospitals for Children Open.

Vegas, the Venezuelan rookie who won the Bob Hope Classic in January for his first PGA Tour title, had 10 birdies and two bogeys at TPC Summerlin in the first of four Fall Series events.

McGirt, also a PGA Tour rookie, had eight birdies in a bogey-free round.

Nathan Green and Charlie Wi were a stroke back.

Vegas, playing in hot afternoon conditions, birdied the par-4 15th and par-5 16th to reach 8 under, dropped a stroke on the par-3 17th and closed with a birdie on the par-4 18th to get back to eight under.

“I feel like I’m hitting the ball absolutely great, which is something fun to do,” Vegas said. “But the main thing was I made a lot of putts today.

“The two greens I missed today, I missed by probably half an inch. And just putting from the fringe I three-putted both times, which was kind of ironic. It’s just golf. It is what it is. You have to stay positive, and the more positive you can be the better you’ll be out there.”

McGirtmade seven birdies in a 10-hole stretch from Nos. 7 to 16, then parred the final two holes to match Vegas at 8 under.