Canada's David Hearn has joined Americans Michael Thompson, Mark Hubbard and Tyler Aldridge at the top of the leaderboard following first-round 64s in the Shriners Hospitals for Children Open in Las Vegas.
Hearn shot eight birdies and suffered just one bogey as he finished his round seven-under-par, while Thompson recovered from a double bogey on the 11th hole by putting an eagle on the 16th.
Hubbard also scored an eagle on the same hole to finish seven-under-par, while Aldridge joined the trio at the top of the standings with seven birdies, but he had only gone through 16 before play was suspended due to darkness.
Englishman Greg Owen is one shot off the pace after carding seven birdies and one bogey.
