So just how different has his form been since the split ?
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 Rory McIlroy 's form been since the split ?
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 .