For the best part of the last decade soccer has seen a personal rivalry unlike any seen before: Cristiano and Leo. This is their definitive story, from children kicking a ball halfway around the world from each other to their era-defining rivalry. One the preening Adonis, a precision physical machine who blows teams away with his pace and power. The other a shuffling genius, able to do things with a soccer ball that seem other-worldly. Their differences seem to tap into something fundamental about sports and indeed life. Between them they have scored over a thousand goals, won the Ballon d'Or nine times and redefined modern soccer. For the past eight seasons they have shared the accolade of best player in the world and arguments rage over which one deserves the title of greatest player of all time.