Spieth shoots 66 to share Hero lead

World number one Jordan Spieth moved into a share of the lead at the Hero World Challenge on Friday.

The 22-year-old followed up an opening 67 with a six-under-par 66 in Friday's secound round at Albany to join countrymen Bill Haas and Jimmy Walker at the top of the leaderboard on 11 under par.

Like Spieth, Haas had rounds of 67 and 66 over the first two days, while Walker shot his 66 on Thursday and followed that up with a 67.

The trio lie one shot clear of Chris Kirk, Patrick Reed and Bubba Watson. Kirk and Reed were the day's biggest movers after rounds of 65, while Watson added a second succesive 67.

Paul Casey and Zach Johnson, who shared the overnight lead with Walker, follow two shots further back on eight under after a pair of two-under-par 70s. They are joined by Matt Kuchar, who rose six places after a well-played 66.

Dustin Johnson (69), Brooks Koepka (70) and Adam Scott (70) lie on seven under, one shot clear of Rickie Fowler.

The day belonged to Spieth, however, who once again found himself right where's he's spent most of the year – in the lead and in the hunt for yet another victory.

While he was only one over par through his first five holes after a birdie at the second was followed by bogeys at the third and fifth, Spieth would enjoy a purple patch over the next nine holes.

Successive birdies at six, seven and eight were followed by a superb eagle at the par-five 11th after he followed up two great shots by draining a lengthy putt from across the green. He would make further gains at 12 and 14 to rise to the top of the pile.

"For the majority of the round, until 15, we had as score-able conditions as possible," Spieth said after his round. 

"[It was] a rough start, but it was a great bounce-back to get seven birdies after being one over through four holes."

Co-leaders Haas and Walker enjoyed similar fortunes, the former making five birdies, an eagle and a bogey and the latter picking up seven birdies and two bogeys.