Rory McIlroy has won the Race to Dubai for the second time in three years
American Brooks Koepka claimed his first European Tour title in the Turkish Airlines Open on Sunday, a result which ensured Rory McIlroy won the Race to Dubai for the second time in three years.
Koepka carded a flawless closing 65 at the Montgomerie Maxx Royal to finish 17 under par, one shot ahead of Ian Poulter who missed a birdie putt from six feet on the 18th to force a play-off.
Marcel Siem, Jamie Donaldson or Sergio Garcia had needed to win in Turkey and at next week's DP World Tour Championship to have a chance of overtaking McIlroy on the money list.
And although Siem started the final round just one shot off the lead, the BMW Masters winner could only card a closing 71 to finish joint eighth, with Donaldson 19th and Garcia 25th.
Koepka, who won three times on the Challenge Tour last year to gain instant promotion to the European Tour, carded four birdies on the front nine and holed from 40 feet for another on the 10th, before a brilliant approach to the 13th set up an eagle from just eight feet.
That gave him a two-shot lead and although Poulter halved his deficit with his fifth birdie of the day on the same hole, the Ryder Cup star was unable to find another on the last despite a superb long greenside bunker shot.