BIRMINGHAM, England (AP) _ Martina Navratilova says she will play at Wimbledon despite her last-minute withdrawal from a warmup tournament.

``I'll be good for Wimbledon, 100 per cent,'' Navratilova said Tuesday. ``I'm sure I'll be 100 per cent and ready to go.''

Navratilova, a nine-time singles champion at Wimbledon, plans to play doubles and mixed doubles at the Grand Slam tournament, which opens June 26.

The 49-year-old Navratilova had planned to play doubles at this week's DFS Classic grass-court tournament but pulled out because of swelling in her right knee. It was heavily wrapped as she spoke to reporters on Tuesday.

``It doesn't hurt, and there's nothing wrong with it,'' Navratilova said. ``The MRI scan shows that, and I have to stop the swelling, that's all. It's just my body's way of saying `Time's up.'''

Asked whether she planned to retire, she said: ``I used to tell, and I got into trouble for it, so I don't say it now.''

In 2003, the Czech-born American became the oldest Grand Slam champion at age 46, winning the Wimbledon mixed doubles title with Leander Paes of India.

Navratilova might not be surprised if someone older took home a trophy from Wimbledon in the near future.

``Forty is the new 30 and I am a bit beyond that,'' she said. ``I am a pioneer, and I think many great players will play to a great age in future.''

Also withdrawing from the DFS Classic were Daniela Hantuchova of Slovakia (wrist) and Alicia Molik of Australia (neck).