Year: 1925

Herbert Chapman is not a very popular name with most modern sports fans, but he is widely held as a pioneer in soccer. Believe it or not, traditional English football was played with just two defenders, with the majority of teams deploying a 2-3-5 formation. Chapman flipped this on its head, putting his Arsenal squad in a 3-4-3 formation that emphasized the counterattack and in the process completely changed the way teams approached the game.

On the strength of their manager's tactical mastery, Arsenal won two league titles and an FA Cup, and Chapman became a club legend in the process.