There hasn't been another season quite like 2004/05 for Chelsea. Ever since then, we have seen the Blues lift every major honour in European club football to become England's pre-eminent side in a 10-year period.
Chelsea have done league-and-cup doubles, broken goalscoring records, made the new Wembley Stadium feel like a second home and become European champions.
And yet, without the arrival of Jose Mourinho as manager in 2004, we can argue that none of it would have been possible. With Roman Abramovich's vast fortune and the Portuguese's managerial nous, Chelsea fans found themselves in the eye of a perfect storm in that summer.