Spains Jon Rahm strengthened his chances of winning the European Tours Race to Dubai by shooting on at a 66 to share the lead.
If wins on Sunday and money-list pioneer Bernd Wiesberger doesnt come next rahm will choose the name.
Austrian Wiesberger is fighting 13 behind Rahm, under overall about two.
Englands Tommy Fleetwood, who would win the Rush when the championship was won by him, is four adrift of Rahm.
Northern Irelands Rory McIlroy, who cant win the Hurry Dubai, moved to Frenchman Mike Lorenzo-Vera, who is planning to become the primary wire-to-wire winner of the Tour Championship and within two shots of Rahm.
The tournament provides a world record $3m (#2.3m) cheque for your winner at Jumeirah Golf Estates Earth course.
McIlroy took a seven-under-par 65 to proceed to 13 under.
The winner started with two birdies and that set the tone, then selecting an eagle on the par-five seventh and a birdie on the hole as he made the turn in 31, five under.
Another 2 birdies followedclosely at the 14th and 16th, before McIlroy got himself faking to get a diploma following a approach to complete with a bogey-free round.
Five players started the championship with a chance of winning the Race to Dubai, with a 5m bonus pool.
And youll find a bewildering number of ways the title, dependant on how their opponents fare could be won by any of the quintet.
Wiesberger began the round to Dubai positions near the peak of the Race, but a 73 saw him drop to two under for the championship, opening the doorway for Rahm.
The Ryder Cup participant carded a 66 that was classy, and opened a sizeable gap over his other challenger in the Rush.
Rahm – that would become only the second Spaniard to win the Race after the Seve Ballesteros, to Dubai, or its predecessor the Order of Merit – produced seven birdies, including one about the 18th.
Open winner Shane Lowry and Englands Matt Fitzpatrick both need to win the tournament but even then their hopes of winning the general title are slim. Lowry will start the last round 10 shots from Rahm, with Fitzpatrick nine back.
Scotlands Robert MacIntyre all but sealed the European Tour name – as the best-placed debutant from the Race to Dubai rankings – having a four-under-par 68 which transferred him 10 shots clear of nearest Kurt Kitiyama.
The 23-year-old out of Oban reeled off six birdies – five at the opening seven holes as he moved to three under for the championship, whereas Kitiyama, from the United States, carded a five-over-par 77 to finish over with just one round to playwith.
MacIntyre was 1 shot ahead of his rival at the beginning of the third round, and went into the tournament in 11th place at the Rush to Dubai, 1 place ahead of Kitiyama.
Barring a shocking turnaround on the final afternoon, the young Scot, who finished sixth on his Open debut at Royal Portrush this year and has claimed seven top-10 finishes in 2019, will combine the likes of Rahm, Brooks Koepka, Sergio Garcia, Nick Faldo and Sandy Lyle in winning the Sir Henry Cotton Rookie of the Year award.
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