Danny Willett wants to put last year's Race to Dubai near-miss behind him by claiming the 2016 title.
The Briton lost out to Rory McIlroy last time out, but is back in the hunt this time around, with only Henrik Stenson ahead of him.
Open champion Stenson scaled the summit after the WGC-HSBC Champions, where the Swede came joint-second and Willett was way down in 75th.
McIlroy is in contention for a third consecutive crown, but Willett is eager to have the honour for himself.
"We've been leading it for a long, long time," the Masters champion said ahead of this week's Turkish Open. "Unfortunately last week, I had probably my worst event on Tour for the years I've been on and Henrik finished second, so jumped us.
"For me, this is a pretty big week. Henrik is not here. He was never scheduled to play anyway. So it gives me a chance to either close that gap, or hopefully leapfrog again and make it really interesting coming down to the last two.
"We were never going to win the Race to Dubai on the amount we were on. We always had to bump it forward and that's still the aim. Got to go out here this week and hopefully the golf game gets a little better and we just keep working forward.
"We've got Nedbank next week and then the Race to Dubai finale in three weeks' time. So there's still a lot of golf left. I've just not been playing very well, so that's the main aim of the next three weeks.
"Last year I played nice at HSBC and then at Lake Malaren I didn't play great and couldn't quite jump Rory. So last year he ended up winning by a good margin, but it was slightly closer than that.
"With myself and Henrik and Rory right there behind, depending that no one does anything silly the next few weeks, Dubai could be really, really good."