The Diablo tactic is a time capsule of a different era of gaming—a time when a single tactical quirk could become a global phenomenon. Whether you view it as a brilliant discovery or a game-breaking glitch, there is no denying that the Diablo is the most famous tactic in the history of the Championship Manager series.

While there were variations, the classic Diablo setup was a slight variation of a standard 4-4-2, often resembling a 4-1-3-2 diamond.