#2 2004/05 season - 12 points gap

Twelve months on from the takeover of Russian billionaire Roman Abramovich, Chelsea appointed Jose Mourinho, who in his first press conference announced himself as the 'Special One' and immediately justified his words with an incredible debut season that ended the west Londoners' 50-year wait for the top-flight league title.
The Blues enjoyed an exceptional season easing their way past fellow Londoners Arsenal, who finished 12 points behind the champions.
Chelsea's only defeat of the Premier League campaign came away at Manchester City in which Nicolas Anelka's penalty proved to be the difference between the sides as Chelsea missed out to replicate Arsenal's invincible 2003/04 season.
It was another defensive heroics which was the key to the title success as Chelsea's defensive unit remained solid to concede a mere 15 goals during the season.