Gary Cahill admits winning feels like an 'addiction' as he challenged Chelsea to become England's first back-to-back champions since Manchester United in 2009.
No team has successfully defended the Premier League title in the last eight years, with competition intensified at the top and the league and the demands of Champions League football.
Chelsea won it back-to-back under Jose Mourinho in 2005-06 and United won it three times in a row between 2007 and 2009 under Sir Alex Ferguson.
In the eight years since, however, no team has managed to successfully defend the title.