#2 Change in system
Last season, it was a change in system post the debacle at Arsenal that sent Chelsea on a 13-match winning streak that propelled them to the top. This season, there has been a marked improvement ever since Chelsea shifted Hazard to play up front with Alvaro Morata.
The two link up extremely well and have a very good understanding between themselves and can wreak havoc among teams in the Premier League. Together, they have been involved in NINE of the last eleven goals Chelsea have scored in the last six matches. Alvaro Morata has also hit the ground running in the Premier League with 9 goals and 4 assists in 13 starts.
The time has come for them to stamp their authority and it is widely expected that the pair will do so, ably assisted by the likes of Cesc Fabregas, Pedro, Marcos Alonso.