I just remember watching Federer the first year he won Wimbledon. He was struggling with his back problem. I remember it vividly. It looked like there was a chance he was not going to finish. He had that look in his eye. Then, somehow, he found the wherewithal to dig a little deeper, and suddenly he wins the thing, and he's a different player.
With commentating, I've had a chance to show the humorous side of my personality that I didn't use on the court. It's fun, and I don't take myself too seriously. I have good broadcast teams with me, but I'm not a huge stats guy. I think they post the numbers too quickly, and I'd rather let the match play out a bit first.