World number one Jon Rahm made his move on the third day of the Tournament of Champions with a course-record round to join Cameron Smith with a share of the lead in Hawaii.
The Spaniard carded a 12-under-round 61 to move level with Smith, who led by three shots at the halfway mark, on 26 under after three rounds at the Plantation Course at Kapalua Resort.
Rahm's round was an equal course record, with 2017 PGA Championship winner Justin Thomas also carding a 12-under-61 on Saturday to surge up the leaderboard to 17 under.
Last year's US Open champion Rahm shot 11 birdies with one eagle and one bogey in his round, drawing level with the Australian when he sunk a 29-foot putt on the 17th hole.
Smith, who also had a one-shot lead after the opening day, held firm with six birdies on his back nine.
The lead pair are five strokes clear of the next best, with American Daniel Berger slipping off the pace after a third straight round of 66 to be 21 under.
Berger finished his round with five consecutive birdies to keep his faint hopes alive.
Matt Jones, Sungjae Im and Patrick Cantlay are tied at 20 under, ahead of Marc Leishman at 18 under with Thomas and 2021 Masters winner Hideki Matsuyama at 17 under.
Top 10 duo Bryson DeChambeau and Xander Schauffele were unable to make any major inroads on the third day and are further back at 15 under.