My initial dream was to be a baseball player, ... I remember throwing a baseball at 2-years-old in the house. My dreams of playing tennis just kept changing. It's been a remarkable road.
Roger (Federer) has said unequivocally that he doesn't want Hawk-Eye, he doesn't want to change anything, but if you're playing as well as he is, you don't want to change your socks, your underwear, your girlfriend, your agent, anything.
He'll be lucky to last five or six years on those knees. What it might have to come down to is playing less on hard surfaces and playing more on forgiving surfaces.