Los Angeles - Marc Leishman and Brian Harman both birdied the 18th on Friday to grab a one-shot second-round lead over world number one Dustin Johnson in the PGA Tour Tournament of Champions in Hawaii.
Australia's Leishman, who held a one-stroke overnight lead, had four birdies without a bogey in his four-under 69 on the Plantation Course at Kapalua.
He was joined on 10-under par 136 by America's Harman, who had seven birdies in a five-under par 68.
The leading duo pulled out of a tie with Johnson, who shook off back-to-back bogeys at the third and fourth holes to card seven birdies in a five-under 68 that left him on 137.
On another breezy day, Leishman notched the only bogey-free round of the day.
He rolled in a 15-foot birdie putt at the par-three second and drained an eight-footer at the par-three eighth. He rolled in another eight-footer for a birdie at the par-four 14th, and at the par-five 18th he missed a 31-footer for eagle by inches and came up with the birdie.
Harman's seven birdies included a chip-in at the 15th, before he closed his round with a birdie putt from within four feet at the last.
Americans Pat Perez and Chris Stroud fired seven-under par 66s to join Venezuela's Jhonattan Vegas (70) on 138.
Three-time major winner Jordan Spieth also carded a 66, bouncing back from an opening 75 to seize a share of 13th place, five strokes off the lead.
Defending champion Justin Thomas carded a disappointing two-over 75 that left him at even par in the 34-man tournament featuring last season's tournament winners.
Leading second-round scores on Friday in the US PGA Tour Tournament of Champions at Kapalua, Hawaii (USA unless noted, par-73):
136 - Marc Leishman (AUS) 67-69, Brian Harman 68-68
137 - Dustin Johnson 69-68
138 - Pat Perez 72-66, Chris Stroud 72-66, Jhonattan Vegas (VEN) 68-70
139 - Jason Dufner 71-68
140 - Hideki Matsuyama (JPN) 70-70, Kevin Kisner 70-70, Patrick Cantlay 70-70, Rickie Fowler 69-71, Kim Si-Woo (KOR) 69-71
141 - Jordan Spieth 75-66, Jon Rahm (ESP) 71-70, Billy Horschel 70-71
143 - Russell Henley 74-69, Daniel Berger 73-70
144 - Wesley Bryan 74-70, Kevin Chappell 74-70, Xander Schauffele 72-72, Hudson Swafford 72-72, Patton Kizzire 72-72, Ryan Armour 71-73
145 - Cameron Smith (AUS) 75-70, Brendan Steele 71-74, Kyle Stanley 70-75
146 - Bryson DeChambeau 73-73, Justin Thomas 71-75
148 - Jonas Blixt (SWE) 77-71, Austin Cook 74-74, Grayson Murray 74-74, Adam Hadwin (CAN) 73-75
152 - Brooks Koepka 78-74, D.A. Points 76-76