Kim Clijsters indicates that she may retire shortly after the 2012 Olympics in London.

"That will probably be the last big event that I will be a part of," said the three-time U.S. Open champion, who has gone back and forth on the subject of her retirement date a number of times.

The 27-year-old also revealed that the sore shoulder that caused her to default her match against Marion Bartoli at Indian Wells is feeling better and she thinks she's good to go in Miami. "I wouldn't risk it if I knew I had a serious injury," the defending champion said.—Matthew Cronin