Jordan Spieth has revealed that he did not expect to be in contention ahead of the final round of the WGC-HSBC Champions event.
The world number two had reached four-under par at the halfway stage, but a third-round 63 has put him to within three shots of the lead.
The 22-year-old is quoted by BBC Sport as saying: "This will be the first and only time I would say this, but I was not expecting to be in this position come Sunday when the week started.
"I've struggled to shoot lower than two or three under on this golf course in the past couple years, but Saturday was the day to do it with ball in hand, very little wind and some gettable pins.
"I missed four putts inside eight feet - I'm not going to complain about the round but I felt like the way I played could have been 10 or 11-under, for sure."
Kevin Kisner leads the tournament, but American Dustin Johnson and Scotland's Russell Knox sit just one shot behind.