Legendary New York Yankee closer Mariano Rivera is winding down an extraordinary career. Rivera who is universally understood to be the greatest closer ever will soon jog in from the bullpen one last time. Rivera first became a dominant closer and a fixture of the New York sports world when Rudy Giuliani was mayor, September 11th was just another day on the calendar, and sending an attachment by email was still considered high tech by many. In this, his last year, he is still one of the best in the game at what he does.