Tired first team favourites
Chelsea have six players who have started every game so far this campaign, and this could come back to hurt them if it continues.
Oscar, Cesc Fabregas, Eden Hazard, John Terry, Gary Cahill, and Thibaut Courtois have all played in every game, whilst Nemanja Matic and Branislav Ivanovic would have also if they hadn’t been suspended for matches.
This can not continue as fatigue will eventually affect their form.