By the time I admitted that I needed a hip operation, I had denied it for so long that it was a breakthrough to suddenly say, “I need this.” I knew I would probably never dance again, but I had no choice. By that time, I just wanted to be normal. I wanted to walk down the street without limping. I couldn’t tie my shoes. I couldn’t put slacks on. I was the farthest thing from a person who ever could dance and do all those extremely incredible extensions and contortions that we do.

You gave a six-year-old boy his Laker dream And I'll always love you for it. But I can't love you obsessively for much longer. This season is all I have left to give. My heart can take the pounding My mind can handle the grind But my body knows it's time to say goodbye.

But I'm ready for what's next after rugby. Being able to not just say that, but to truly feel it, is a privilege. Ultimately, getting to leave your sport on your own terms is all you can really hope for as an athlete.

I have never liked the word retirement. It doesn't feel like a modern word to me. I've been thinking of this as a transition, but I want to be sensitive about how I use that word, which means something very specific and important to a community of people. Maybe the best word to describe what I'm up to is evolution. I'm here to tell you that I'm evolving away from tennis, toward other things that are important to me.

I had set my mind on winning the 1500-meter gold medal in Helsinki in 1952. ... And, it all came disastrously wrong when I came fourth instead of winning. ... Instead of retiring in order to devote myself to medicine, I decided to go on for another two years while I was still a student, working clinically in London, and I did that.