Jordan Spieth vowed to be aggressive on Sunday after a stunning 63 fired him into contention at the World Golf Championships - HSBC Champions.
The World Number Two was ten shots behind leader Kevin Kisner heading into the third round but nine birdies in an unblemished effort meant he had cut that gap to three shots by close of play on Saturday.
Spieth has enjoyed a remarkable 2015 season on The European Tour, winning the Masters Tournament and the US Open, but he admitted to having some concerns over his swing heading to Sheshan International Golf Club.
Those were not on display on Saturday, though, and the American is feeling far more confident heading into the final round.
"I'll be aggressive," he said. "I was aggressive on 18 there, which summed up my round today. Take a few chances, see if it pays off.
"I think tomorrow, I'm going to have to do the same thing. This golf course, though, there's a lot of water, a lot of trouble. You've got to keep the ball in the fairway.
"If I can put some pressure on from a group or two ahead, you never know how it will back up at the end, so I'm going to have some patience towards the end of the round and hopefully get off to a good start.
"It was a pretty good round. I'm very pleased with nine under anywhere.
"The conditions were favourable. There were definitely some birdies out there. It's all about making the putts. I had a lot of shorter-length birdie putts today. Ones that were inside of five feet, and I've got a couple of longer ones to go.
"For the most part it was ball-striking, I didn't put myself in much trouble, I really only missed one green and so I was able to capitalise."
He added: "This will be the first and only time I would say this, but I was not expecting myself to be in this position come Sunday when the week started.
"I came in with very little confidence in my trust of what I'm trying to do in my swing.
"When I feel like I have a shot that I can trust, you're a lot more confident over the ball. You see the shots coming together and then all of a sudden you're able to make more putts.
"That's just how it works with golf. It's just a momentum game, a confidence game and we'd certainly built a lot today."
Countryman Dustin Johnson was two shots ahead of Spieth as he goes in search of a second WGC - HSBC Champions title after his victory in 2013.
The big-hitting 31 year old fired an unblemished 65 in the third round and is hopeful he can carry that momentum into Sunday.
"It's always great to be up there and feel like you have a chance on Sunday," he said. "I'll definitely have a chance to win tomorrow, and you know, that's kind of all you can ask for.
"Two years ago here, I had a three shot lead on Sunday and tomorrow, I'm one behind, but I just need to go out and do what I did today. Just drive it in the fairway and get a lot of looks at birdies."
Local favourite Li Haotong pleased the crowds in Shanghai as he got within one shot of the leader with a 66 that started with four birdies.
The cheers from the home fans seemed to get louder with every hole but the 20 year old kept expectations in check following his round and insisted he would be happy with a top ten finish.
"This tournament is so big," he said. "I know that the final day, a lot of people are going to be hitting a lot of birdies.
"My target, my goal for this tournament it to make the top ten, because making the top ten would be a highlight and a milestone for my short career. I hope that tomorrow I can do well and finish at the position of where I want to."
Russell Knox is the third man in the group at 15 under but he will have to return to play the last hole on Sunday morning.
Play had been delayed due to the threat of storms in the morning and, with the light diminishing, Knox took the decision to finish his third round in full daylight.
"Our group spoke on the 17th tee," he said. "We could easily have not played, but we all hit great shots and walked off with either a birdie or a par.
"Then Branden (Grace) and Kevin (Kisner) wanted to get it done on the last, but it was into the wind, so I thought I'd just wait until the morning and see if I can catch it downwind or with no wind at all."
