Quiros made a 40-foot eagle putt on the 18th hole for 5-under-par 67 and a two-shot victory over 1999 British Open champion Paul Lawrie, who also had 67.
The top-ranked Donald, who won the PGA title earlier this year, had to finish better than ninth or hope Rory McIlroy didn’t win the tournament.
Donald closed with 6-under-par 67 to finish three shots behind Quiros.
McIlroy, weakened with a virus all week, tied for 11th after a final-round 71. That left McIlroy more than $1.34 million behind Donald in the money race.
“It’s funny to kind of sum up my feelings” said Donald, who has just come back from five weeks off in which he buried his father and was on hand for the birth of his second child.
“You know, this is something I’ve wanted for the past few months, to try and win both money lists,” Donald said. “It’s very strange because I looked at the leaderboard on 13 and couldn’t see Rory. I couldn’t see Rory’s name on there and the leaders were playing well, and at that point, I kind of knew I had made history and the last six holes were kind of surreal.”
The big-hitting Quiros managed to reach the 18th green in two while Lawrie was there in three. Rather than play it safe, Quiros clinched the win with a long eagle putt.
It was a much happier ending than a week ago, when Quiros had a 3-shot lead going into the final round of the Hong Kong Open. He let it slip after erratic drives and poor putting, finishing in a tie for seventh – five shots behind McIlroy.