Months after retirement, Li Na announces she's pregnant

A year after winning the Australian Open title, Chinese tennis star Li Na returned to Rod Laver Arena on Monday. This time, the retired two-time Grand Slam champion had no plans of playing: she came to announce that she is pregnant with her first child.

"I'm not sure I can trust everyone or not," she joked with the crowd. "Me and Dennis, we are so excited our first child will be out in the summer. Dennis is doing good job — he just makes one ace."

Li, 32, became the first Asian player to win a grand slam event when she captured the title at Roland Garros in 2011. She was the runner-up in Australia twice before winning in 2014.

She later posted to Facebook to explain why she made the announcement at Melbourne Park.

"Today it felt like I was in the company of my 15,000 friends," she wrote. "And it really feels like this baby is going to enter the world already having about 15,000 friends."

She retired from the tour in September 2014 due to chronic knee injuries.

"We can't wait to become parents and start this new chapter together," she wrote on Monday.