The greatest battles Rory McIlroy has fought over the last 10 years have been with himself. This was never going to end any other way. At times on Sunday, it seemed like the only thing standing between McIlroy and victory was the space between his ears.

Days after the Northern Irishman completed a career Grand Slam at Augusta National, where he defeated England’s Justin Rose in a one-hole playoff Sunday, comments made at the tournament by McIlroy’s ex-fiancée, tennis star Caroline Wozniacki, have circulated online.