After the first trip around TPC Summerlin on Thursday it is Tom Hoge alone atop the Shriners Children's Open leaderboard with an eight-under 63.
Hoge finished his bogey-free round with four birdies and two eagles, holing out from the fairway on the par-four seventh hole, before sinking a 33-foot eagle putt when he took on the water on the par-five 16th.
He leads by one stroke from the duo of Kim Si-woo and Maverick McNealy, who combined to shoot one bogey and 15 birdies to sit at seven under.
Kim is part of a strong South Korean contingent in the top-five, with Tom Kim, Kim Seong-hyeon and Im Sung-jae all part of an eight-way tie for fourth at six under.
Former world number one Jason Day headlines the next group at five under as he continues to climb back up the rankings, and Mito Pereira is at four under after bursting onto the scene last season by making the playoff at the PGA Championship.
Winner of the first event of the season and a strong performer at the Presidents Cup, Max Homa is also at four under, along with fellow United States team member Patrick Cantlay and International team representative Cam Davis.