Chelsea had only lost one home league game in more than five seasons under Jose Mourinho; now they have lost two of the last three. They had only conceded 15 league goals in 38 games when his 2004-05 side became champions but have conceded 17 in eight matches already in the current campaign. They had 22 points at this stage 12 months ago, but just eight now.
The statistics are extraordinary -- but what are the reasons for this remarkable decline?
Matic fails to shield defence
Nemanja Matic established...