Luke Donald overhauled Rory McIlroy at the top of the world rankings as he secured the BMW Championship title at Wentworth with a dominating performance.
The 34-year-old was able to retain his title as he shot a final round of 68 to finished the tournament on 15 under, four shots clear of fellow Englishman Justin Rose and Scotsman Paul Lawrie.
Donald won his sixth tournament in the last 15 months and moved above McIlroy who had failed to make the cut on Friday after two disastrous rounds.
"To come and defend and get back to number one is very sweet indeed," said Donald. "I was just trying to keep my head down and plug away. I was swinging well and I've putted well all week.
"I just needed to settle down a bit. This is a big week and I felt some of the pressure.
"After the fourth I didn't give him (Rose) another hole where he was teeing off first other than the 18th. I got the job done.
"I take a great amount of satisfaction. It means I am doing the right things - the hard work is paying off and I have a great team around me."
Donald had a comfortable lead for most of Sunday as Rose failed to convert a number of birdie opportunities, while Lawrie continued his fine form that has seen him rise to second in the Ryder Cup points race.