Former world No 1 Caroline Wozniacki will retire from tennis after the Australian Open in January.

Wozniacki, who won the tournament in Melbourne in 2018, announced the news on Instagram on Friday and says retirement has nothing to do with her health.

The 29-year-old wants to start a family with husband and former NBA star David Lee, while travelling the world and raising awareness about rheumatoid arthritis.

View this post on Instagram

I’ve played professionally since I was 15 years old. In that time I’ve experienced an amazing first chapter of my life. With 30 WTA singles titles, a world #1 ranking for 71 weeks, a WTA Finals victory, 3 Olympics, including carrying the flag for my native Denmark, and winning the 2018 Australian Open Grand slam championship, I’ve accomplished everything I could ever dream of on the court. I’ve always told myself, when the time comes, that there are things away from tennis that I want to do more, then it’s time to be done. In recent months, I’ve realized that there is a lot more in life that I’d like to accomplish off the court. Getting married to David was one of those goals and starting a family with him while continuing to travel the world and helping raise awareness about rheumatoid arthritis (project upcoming) are all passions of mine moving forward. So with that, today I am announcing that I will be retiring from professional tennis after the Australian Open in January. This has nothing to do with my health and this isn’t a goodbye, I look forward to sharing my exciting journey ahead with all of you! Finally, I want to thank with all my heart, the fans, my friends, my sponsors, my team, especially my father as my coach, my husband, and my family for decades of support! Without all of you I could have never have done this!

A post shared by Caroline Wozniacki (@carowozniacki) on Dec 6, 2019 at 5:31am PST

She won 30 WTA singles titles and held the No 1 spot in the rankings for a total of 71 weeks.

In her Instagram post, Wozniacki said: “I’ve played professionally since I was 15 years old. In that time I’ve experienced an amazing first chapter of my life.

“With 30 WTA singles titles, a world No 1 ranking for 71 weeks, a WTA Finals victory, 3 Olympics, including carrying the flag for my native Denmark, and winning the 2018 Australian Open Grand slam championship, I’ve accomplished everything I could ever dream of on the court.

Wozniacki's only Grand Slam title came at the 2018 Australian Open Wozniacki's only Grand Slam title came at the 2018 Australian Open Wozniacki’s only Grand Slam title came at the 2018 Australian Open

“I’ve always told myself, when the time comes, that there are things away from tennis that I want to do more, then it’s time to be done. In recent months, I’ve realised that there is a lot more in life that I’d like to accomplish off the court.

“Getting married to David was one of those goals and starting a family with him while continuing to travel the world and helping raise awareness about rheumatoid arthritis (project upcoming) are all passions of mine moving forward.

“So with that, today I am announcing that I will be retiring from professional tennis after the Australian Open in January. This has nothing to do with my health and this isn’t a goodbye, I look forward to sharing my exciting journey ahead with all of you.