World number one heads the field on 20-under par

 
 
 
Six Birdies, in a flawless round of 66 means Rory McIllroy has a 4-shot lead at the end of round 3 of the Dubai Desert Classic.
The world number one  heads the field on 20-under par, four clean of Denmark’s Morten Orum Madsen.
Denis Kirwan reports:
 

Podcast: Play in new window | Download