Jordan Spieth owns a share of the lead after the first round of the Sony Open in Hawaii, tied with Chris Kirk and Taylor Montgomery at six under.
A three-time major champion, Spieth has one PGA Tour win in each of the past two seasons, and this week he is seeking his first top-10 finish since The Open in July.
He posted seven birdies and one bogey during his first trip around the picturesque Waialae Country Club course to shoot 64, while Kirk and Montgomery reached their scores in identical fashion, joining Spieth at the top after both birdieing their final hole.
Kirk has not won a PGA Tour event since the Crowne Plaza Invitational at Colonial in 2015, but he flashed some form this past season with four top-10 finishes, including a tie for fifth at May's PGA Championship. Montgomery entered the season with no career top-10s, but has three in his seven starts this campaign.
There is a seven-way tie for fourth place at five under featuring Slovakia's Rory Sabbatini from the early group and South Korea's Seong-hyeon Kim from the late finishers.
The densely packed field means there is a further logjam at four under including Maverick McNealy and top-five finisher from last week's Sentry Tournament of Champions, J.J. Spaun.
England's Aaron Rai is at three under, Japanese major champion Hideki Matsuyama is at two under and fellow former Masters champion Adam Scott of Australia is at one under.
The highlight of the day came from Ryan Armour, who finished his round at even par, but enjoyed a moment he will never forget after hitting his second ace of the season on the par-three 17th.