4) Lack of rotation
Part of what has helped Chelsea so much this season in comparison to rivals Manchester City, Man United and Liverpool is the settled first team Jose Mourinho decided on at the start of the season.
With the exception of Willian’s battle with Andre Schurrle for the final spot, Mourinho has stuck with his first XI in every game, injuries permitting. T
he problem with this, as the season goes on, is the inevitable fatigue that sets in. While Chelsea have cover in defence and attack, they have no alternative to Cesc Fabregas in midfield.