Though after a straight forward midweek 5-0 win, what was expected to be a pretty easy game for the league leaders against a struggling team proved to actually be quite tricky.
The Black Cats gave a master class in defending ultimately holding Chelsea to a surprising goalless draw.
Despite being unable to break through Gus Poyet’s men the visitors will be happy with their clean sheet and superior possession.
The draw keeps Chelsea on top with a six point gap and the expectation of an ‘invincibles’ season only grows stronger.
With that in mind, here are five things we learnt from the Blues this weekend. Click on Nemanja Matic to see what our thoughts were.
Chelsea supporters. Do you think Costa should have received a red card for his violent conduct? Can the Blues stay unbeaten this season? Let us know your thoughts below, become a guest blogger for us or tweet us @LaFootyettes.