Kapalua - Japan's Hideki Matsuyama had eight birdies in a seven-under 66 on Sunday to share the third-round lead at the US PGA Tournament of Champions with Jimmy Walker.
Matsuyama notched the low round of the day, a birdie at the Kapalua Plantation course's 18th hole giving him a 54-hole total of 17-under 202.
Walker, who was part of a four-way tie for the top spot after the second round, carded a 67 to maintain a share of the lead.
The duo were two strokes ahead of Patrick Reed, who carded a 68, and South Korea's Bae Sang-Moon, who signed for a 69.
It was a further stroke back to Brendon Todd and Russell Henley on 205.
Masters champion Bubba Watson posted his best round of the week, a five-under 68 that put him in a tie for seventh at 12-under 207. He was joined by Robert Streb and Scott Stallings.
Defending champion Zach Johnson, who was among the leaders after the second round, carded an even-par 73 to stand alone on 208.
Matsuyama, who qualified for the winner's-only tournament with his triumph at the Memorial last season, shrugged off a bogey at the opening hole, getting back to even par for the round with a birdie at the fifth.
He birdied three in a row at seven, eight and nine, and added another run of three straight birdies on the back nine before
He made three straight birdies on the front nine and back nine before making his two-footer for birdie at the par-five 18th.
Walker, who won three tournaments last season, led by as many as two strokes during the round. He finished without a bogey, but after making five birdies in his first 10 holes he couldn't find another until the 18th to keep a share of the lead.
The $5.7m tournament is the first US PGA Tour stop of 2015, as the 2014-15 campaign resumes after a December break. It will conclude on Monday.
Leading third-round scores on Sunday in the US PGA Tour Tournament of Champions (USA unless noted, par-73):
202 - Hideki Matsuyama (JPN) 70-66-66, Jimmy Walker 67-68-67
204 - Patrick Reed 67-69-68, Bae Sang-Moon (KOR) 66-69-69
205 - Brendon Todd 69-67-69, Russell Henley 65-70-70
207 - Bubba Watson 70-69-68, Robert Streb 67-69-71, Scott Stallings 67-70-70
208 - Zach Johnson 68-67-73
209 - Kevin Streelman 69-73-67, Matt Jones (AUS) 69-72-68, Ben Martin 67-72-70, Charley Hoffman 70-66-73
210 - Noh Seung-Yul (KOR) 71-70-69, Ryan Moore 71-70-69, Jason Day (AUS) 70-69-71
211 - Chesson Hadley 70-73-68, Hunter Mahan 71-71-69
212 - Tim Clark (RSA) 70-75-67, Billy Horschel 72-70-70, Camilo Villegas (COL) 71-70-71, John Senden (AUS) 68-71-73, Matt Kuchar 68-70-74
213 - Steven Bowditch (AUS) 69-73-71, JB Holmes 69-71-73
214 - Matt Every 73-71-70, Nick Taylor (CAN) 69-73-72, Ben Crane 74-67-73
215 - Geoff Ogilvy (AUS) 72-69-74, Brian Harman 70-70-75
216 - Angel Cabrera (ARG) 71-73-72
217 - Chris Kirk 68-76-73
Kevin Stadler 74-73-WD