WHAT THE ORDER OF MERIT CONTENDERS NEED TO DO

Robert Karlsson (73, 2 over)

The Swede wins the title if he is first or second in the event; or if neither Harrington nor Westwood finishes in the top two and if Jimenez does not win.

Tournaments won: Dunhill Links, Mercedes-Benz.

Season's earnings: €2,695,248.

Pádraig Harrington (76, 5 over)

Needs to win the event with Karlsson no better than third, or to finish second with Karlsson no better than sixth and Westwood not winning.

Tournaments won: US PGA, British Open.

Season's earnings: €2,397,823.

Lee Westwood (70, 1 under)

Must win the event with Karlsson no better than fourth.

Tournaments won: None.

Season's earnings: €2,228,642.

Miguel Angel Jimenez (73, 2 over)

The Spaniard needs to win the event with Karlsson no better than 39th and Harrington outside the top two.

Tournaments won: BMW PGA,

Hong Kong Open.

Season's earnings: €2,018,596.