Caroline Wozniacki and Rory McIlroy take a trip around Sydney

Strewth! Wozzilroy frolic 300m above the streets of Sydney on vertigo-inducing Tower Skywalk

Wozniacki suffered with some knee niggles which led to her losing the No 1 ranking, and a loss to Pervak will not have been the way that she would have preferred to finish off the year.

But she seemed to be in good spirits as she joined McIlroy on the Sydney Tower Skywalk. The pair took a stroll around the top of the building, which is over 300m tall.

It must have been a nerve-wracking experience for the Dane, as she tweeted: 'Really proud of myself, on top of the world in Sydney with @McIlroyRory! #afraidofhights'

The pair also made stop at the world-famous Sydney Opera House during their city trip.

The pair have denied that they are set to wed after Wozniacki was spotted wearing a diamond ring

Not engaged: The pair have denied that they are set to wed after Wozniacki was spotted wearing a diamond ring

They have denied engagement rumours after Wozniacki was spotted with a diamond studded ring on her left hand.

McIlroy recently revealed that he doesn’t know whether or not he will aim to play in the 2016 Olympics.

Golf has just been accepted back into the Olympic family, but the Northern Irishman is anticipating a backlash from whichever nation he chooses not to play for in Rio.

‘Play for one side or the other or not play at all because I may upset too many people,’ said McIlroy, in a BBC Northern Ireland documentary.

‘Those are the three options that I am considering very carefully.’