Another day, another routine win for Chelsea as Jose Mourinho's Blue juggernaut rumbles on after Christmas.

The 2-0 win against West Ham bore all the hallmarks of this current season side; an elusive and fluid attack build on the foundations of some rock-hard lynchpins at the back.

John Terry's goal set the Blues on their way, scoring in his second consecutive game from Diego Costa's assist. From there on, Chelsea impressed with a kaleidoscope of attacking football, with the brick wall of Adrian doing his darnedest to keep the scoreline respectable.

So... a Boxing Day win for Chelsea. What did we learn? Come have a look...

Diego Costa is the best player in the Prem. Full stop.

Sublime finish? Check. Crucial assist? Check. Costa has weighed in with another performance that shows why exactly he will prove the difference between Chelsea and the rest of their competitors this season.

Captain, Leader, Legend is back to his best

Something about Jose Mourinho brings out the best of John Terry. Don't ask us what it is the Special One does - we don't want the mental images. Either way, JT has two in two now and is showing the kind of form that made him integral to Chelsea's success with Jose last time round. Strikers (and goalkeepers) beware.

Chelsea are now the hardest team in the Premier League

Forget Stoke. Forget West Ham. Chelsea are now the Premier League's hardest side. That's even with little Oscar and Cesc floating around.