but she says that she's been fighting this bug. you know, she was knocked out of the singles a few days ago. we don't know whether she was starting to get sick then and that was her surprise exit. we don't know whether being upset about that is part of what got her in this kind of shape today. we just have no idea. it's just strange. >> yeah. i mean, that doesn't look like a case of nerves or being upset there. that looks like something is wrong. so she failed, as you said, to advance deep into any of this year's three tennis majors. >> so far. >> she suffered several injuries. didn't she have a lung infection or a clot on her lung? >> yeah. a few years ago she had a pulmonary embolism. and the blood clots made their way to her lungs. really they said a couple hours difference of her getting to the hospital, she would have died. so really she has struggled. she took almost a year off from tennis at that point. and really there was an idea of hey, maybe at that point she should just retire. she was 30 years old then. a lot of people thought hey, serena, you've done enough in the game.