This is how a top level tennis player like Serena Williams trains. Announcing her French Open withdrawal, the American said: 'I'm beyond disappointed. You know, I gave up so much, from time with my daughter to time with my family. I put everything on the court, you know. All for this moment. So it's really difficult to be in this situation, but I always, for now in my life, I just always try to think positive and just think of the bigger picture and hopefully the next events and the rest of the year.'