The day before winning his fourth major at the US PGA Championship, Rory McIlroy hinted that his break up with fiancee Caroline Wozniacki was the reason for his success this year.
So just how different has his form been since the split? Here we look at his tournament wins while dating the tennis pro and after the relationship ended.
The pair split in May after being together for three years from August 2011 to May 2014.
McIlroy said on Saturday after the third round: "I've put a little bit more time into my golf and refocused in a way. It's the only thing I have, I've got my family and my friends, but I just immersed myself in my game.
"I've practised hard and I've done all the right things and I'm reaping the rewards. Golf is the number one priority to me and while I'm on this run of form I want to try and keep it going as long as possible."
Trophies won while dating Wozniacki
Dec 2011: UBS Hong Kong Open
March 2012: Honda Classic
Aug 2012: US PGA Championship
Sept 2012: Deutsche Bank
Sept 2012: BMW Championship
Nov 2012: DP World Tour
Trophies won since the split
May 2014: BMW Championship
July 2014: The Open
Aug 2014: WGC-Bridgestone
Aug 2014: US PGA Championship
McIlroy has now won two fewer competitions in three months since splitting with Wozniacki than he did during their three-year relationship, including double the majors.
(majors in bold)