Justin Thomas and Ryan Moore lead the way at Tournament of Champions

Justin Thomas and Ryan Moore share the lead heading into the weekend of the SBS Tournament of Champions in Hawaii after both shot 67 on day two.

Overnight leader Jimmy Walker struggled to get much going as he settled for a resolute three-under 70 which left him a shot behind alongside Ryder Cup team-mate Patrick Reed, who matched Walker's opening 65 when he birdied four of the last five holes at Kapalua.

World No 1 Jason Day is five shots off the lead on seven under along with Dustin Johnson, but Jordan Spieth's hopes of defending his title took a hit when he triple-bogeyed the 17th hole to take the gloss off a 69 as he closed on five under.

Thomas and Moore were paired together in the penultimate group and both carded seven birdies against one dropped shot to return the same score as their first round.

Thomas, who qualified for the event when he successfully defended his CIMB Classic title in Malaysia in October, reeled off three straight birdies from the third and picked up further shots at 11 and 14 before he three-putted from 50 feet at the long 15th.

But he bounced back with a 15-foot putt for birdie at 17 and converted a 100-yard wedge to six feet at the last to ensure a share of the lead with his playing partner.

Moore bogeyed the second and managed to get back under the card by the turn with birdies at the fourth and ninth, but he found his form on the inward half as a 30-foot putt for birdie at the 12th sparked a fantastic finish.

Live PGA Tour Golf

The Ryder Cup wild card made three consecutive birdies from the 14th and pitched to within inches of the cup at the last and tapped in for his fifth gain over the last seven holes.

Reed, arguably the star player in Team USA's win at Hazeltine, had earlier posted the low round of the day after emulating Thomas' hot run on the front nine as well as Moore's flying finish.

The 2015 champion birdied three in a row from the third, started the back nine with a birdie at the 10th and made four in five holes from the 14th as he backed up his precise iron play with assured putting.

Walker was not in the same form as day one and was content to grind out the pars while picking off birdies at the two par-fives on the front nine, and he was still tied for the lead when he holed from 10 feet for birdie at 14 before dropping his first shot of the tournament when he tugged his approached long and left at the 17th.

He responded with a seven-foot putt for birdie at the last to join Reed on 11 under, while Jason Dufner is a stroke further back after he picked up five birdies in seven holes around the turn before making a mess of the last, closing with a scrappy six after tugging his drive and being forced to hack out of the hazard.

Hideki Matsuyama, who was the hottest player on the planet over the last two months of 2016, made a significant move with five birdies sweeping him to the turn in 31, but the Japanese ace veered into unknown territory on the 17th and ran up a double-bogey.

He recovered to birdie the last for a 68 to reach nine under, while Day (69) and Dustin Johnson (70) were subdued by their standards but managed to stay within striking distance of the lead.

Spieth has earlier entertained when he responded to an ugly double-bogey at the short eight with five straight birdies, and he made further gains at 16 and 18 either side of an eventful 17th hole in which he took two penalty drops.