Cristiano Ronaldo is one of the greatest players of all time. After proving himself under Sir Alex Ferguson at Manchester United, he earned a mighty reputation at Real Madrid and helped them strengthen their game. His talent and unmatched ability took the footballing world by storm. Becoming one of the world's favourite players, his journey to the top of the game was full of hard work, goals and confidence. About the Greatest Football Stars series: Greatest Football Stars dives into the incredible journeys of the world's greatest players of all time. Featuring talents from all around the globe, this series covers their unique journeys to stardom – from playing football in the park to performing in front of capacity crowds on the biggest stage and in the biggest leagues.