The race for the European money title is down to 18 holes, with Paul Casey in the lead.
No. 2 Padraig Harrington, No. 3 David Howell and No. 4 Robert Karlsson were all within four shots of Volvo Masters leader Jeev Milkha Singh after Saturday's third round, knowing the only sure clincher is a victory.
Casey, who entered the final event at Valderrama with a $274,080 lead over Harrington for the money title, was nine shots back after his par 71. Casey is trying to become only the fifth player to win the Order of Merit since 1993.
"Barring a spectacular round of golf tomorrow, I can't get near any of those guys," Casey said. "I'm going to be a spectator. I'm going to sit back and see what those guys do."
Singh shot a 68 to leave him at 210. If he wins, his first-place prize of $840,855 would be more than he has earned in any of his nine seasons on tour.
"I'm going to go out there and just play for myself," Singh said. "If it happens, it's good. If it doesn't, I've got another week."
Singh was followed by four players at 211: Sergio Garcia (70), Johan Edfors (69), Lee Westwood (72) and Henrik Stenson (73).
Harrington was at 214 after a 72. Howell and Karlsson both shot 70s and were at 213. Karlsson must win the tournament to have any chance at the Harry Vardon trophy. Harrington must finish in the first three and Howell in the top two for a chance at the money crown.
Casey, the Order of Merit leader since winning the World Match Play Championships in September, can make their task even harder by finishing no worse than 35th. In that case, Harrington would need a top-two finish and Howell a victory.
"I can maybe steal away a position from them, make them finish second rather than third," Casey said. "That's the plan. That's the goal."