BRUSSELS — Former world No. 1 Kim Clijsters announced Tuesday she is to retire after the U.S. Open in September.

BRUSSELS — Former world No. 1 Kim Clijsters announced Tuesday she is to retire after the U.S. Open in September.

The 28-year-old Belgian, who has said previously that this would be her final season, told a news conference that she wanted to sign out in New York, where she enjoyed the biggest success of her career by winning the women's singles title at Flushing Meadows in 2005, 2009 and 2010.

"As it stands, I will end my career at the U.S. Open. That is where I enjoyed my greatest triumphs and it is a very special place for me," Clijsters said.

"The stadium is only about 45 minutes away from our house in the United States and my parents-in-law will be able to be present."

Clijsters is married to former U.S. basketball player Brian Lynch and the couple have a daughter, Jada.

She retired for the first time in 2007, and gave birth to her daughter, before staging a remarkable comeback in 2009 that ended in her triumph at the U.S. Open.

Clijsters also won the Australian Open in 2011, the same year she topped the world rankings for the first time in five years.

But she has increasingly been dogged by injuries and a hip injury caused her to withdraw from this year's clay-court season. She hopes to be fit in time for Wimbledon and the London Olympics.