Earlier today we asked the question.
This week Luke Donald celebrated his 52nd week at the top of the Official World Golf Rankings.
Incredibly, only 15 other players have held the number one spot in the 24-year history of the rankings. Who are they?
The only other golfers to hold World No 1 status are: Bernard Langer (3 weeks); Seve Ballesteros (61); Greg Norman (331); Nick Faldo (97); Ian Woosnam (50); Fred Couples (16); Nick Price (44); Tom Lehman (1); Ernie Els (9); David Duval (15); Vijay Singh (32); Tiger Woods (623); Martin Kaymer (8); Lee Westwood (22) and Rory McIroy (7).