Tennis legend Monica Seles is speaking out about her diagnosis with a chronic neuromuscular condition to help shine a spotlight on the disease for others who may be struggling with changes to their own health. The nine-time Grand Slam champion and International Tennis Hall of Famer, who played her last professional competitive match in 2003 and officially retired from the sport in 2008, said in an interview with "Good Morning America" Tuesday that she was diagnosed three years ago with myasthenia gravis, or MG, a rare autoimmune condition. "It was 30 years ago that I came back to the [U.S.] Open ... It was like a reset, and this was one of the reasons I decided to go public with my myasthenia gravis, because it's been a huge reset in my professional life as a tennis player, also in my pers
Monica Seles discusses myasthenia gravis diagnosis

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