Jonas Blixt, Ryan Moore and Brendon de Jonge share the lead in a three-way tie after the third round of the Justin Timberlake Shriners Hospitals for Children Open.
The Swede, who shared the leaderboard with De Jonge after the second round of play on Friday, birdied six of the last seven holes on Saturday for a 5-under 66.
Moore had a bogey-free 65, and De Jonge birdied four of the last five for a 66 to match Blixt at 19-under 194 at Summerlin.
Jimmy Walker and Tim Herron are five strokes back heading into Sunday's action, with Walker having a 66 and Herron shooting 68.