Tennis ace Caroline Wozniacki has wasted little time celebrating her engagement to superstar golfer Rory McIlroy, hitting the practice court in Sydney.

No time to make honeymoon plans, tennis ace Caroline Wozniacki hit the practice courts in Sydney just hours after getting hitched to golf superstar Rory McIlroy.

McIlroy snared the most important birdie of his life, announcing his engagement to Wozniacki on Wednesday morning after popping the question on New Year’s eve.

McIlroy used the Sydney Harbour fireworks as the spectacular backdrop for his midnight proposal, with the sporting love match hitting Twitter to make their big announcement.

“Happy New Year everyone! I have a feeling it’s going to be a great year!! My first victory of 2014 #shesaidyes!!” McIlroy tweeted.

Wozniacki, 23, proudly posted a photo of her diamond engagement ring, saying she said “yes”.

“Happy New Year everyone! Rory and I started 2014 with a bang! … I said YES,” Wozniacki tweeted.

The two former world No.1s celebrated New Year’s Eve in Sydney as Wozniacki prepares for this month’s Australian Open.

The world No.10 withdrew from this week’s Brisbane International citing a sore shoulder – and she wasted no time testing her injured serving arm out during a two-hour hit-out at Sydney Olympic Park.

The pair told Sydney International organisers they wanted a “low-key” session and that’s exactly what they got at Ken Rosewall Arena on Wednesday afternoon.

Wozniacki, McIlroy and her coach Thomas Hogstedt had the 16,000-seat centre court all to themselves, save for a handful of construction workers preparing for the Sydney International starting on Sunday.

The tournament will be Wozniacki’s only summer lead-up event before the season’s first grand slam starting at Melbourne Park on January 13.

Still chasing her maiden major, Wozniacki will be looking to complete a memorable double after McIlroy last month ran down Adam Scott to win the Australian Open golf championship at Royal Sydney.

After starting the season as world No.1, McIlroy ended the year ranked sixth – but celebrating his greatest conquest in Australia.

McIlroy and Wozniacki – or Wozzilroy as they’ve been dubbed – began dating in 2011 and both posted photos of the Sydney Harbour Bridge and fireworks, as well as a picture of a giant rock on the Dane’s left hand when revealing their engagement.

While the glamour couple spend months of the year apart, they still support each other in their respective pursuits whenever they can, with Wozniacki donning overalls to caddie for McIlroy in a par-three competition on the eve of this year’s Masters.

Their announcement on Wednesday comes a year after the Dane appeared at Brisbane International with a large ring on her left ring finger, sparking a flurry of engagement rumours.

In February in Kuala Lumpur, Wozniacki said engagement was a question for McIlroy to answer but added, “I enjoy everything that’s happening right now and how things are. Marriage? We’re still young and we have many years in front of us.”

By October, with both mired in winless slumps, there was talk of a romantic split.

That talk faded after Wozniacki won in Luxembourg to end her own win drought of more than a year, with McIlroy tweeting his congratulations, saying “#21 #luxembourg #mygirl @CaroWozniacki.”