Rory McIlroy and Caroline Wozniacki announce engagement

Rory McIlroy is claiming his first win of the new year - his engagement to tennis star Caroline Wozniacki.

One of the top power couples in sports announced their engagement on Twitter.

A spokesman for McIlroy confirmed that he popped the question in Sydney, where Wozniacki is starting to prepare for the Australian Open in Melbourne.

McIlroy tweeted, "Happy New Year everyone! I have a feeling it's going to be a great year!! My first victory of 2014.

" He added a hash tag, "She said yes!!" Wozniacki also tweeted the news.

Their tweets included a photo collage of her engagement ring, a photo of them together and fireworks over the Sydney Harbor.