Roger Federer's classy farewell reminds others how it should be done

We all knew it would be emotional, but maybe this was a step ahead of what we expected. The celebration of Roger Federer’s final match at the end of his illustrious career needed to be lavish to debut a sporting giant who transcended the sport of tennis long ago. Yet as the great man began to speak and the tears began to flow for him, the rest of us present