Chelsea manager Carlo Ancelotti says his side haven't given up on the title race yet, after a 2-0 win over Man City on Sunday.
Man City started brightly and Yaya Toure came close - but his shot was well saved by Chelsea keeper Petr Cech.
There was an injury scare for John Terry in the first half, when he was treated for a leg injury. England boss Fabio Capello would have been relieved to see his captain recover.
Birthday boy Fernando Torres couldn't make an impact and was substituted after 70 minutes with Didier Drogba.
But it was the brilliant Brazilian Luiz who broke the deadlock - he won a free kick and headed home Didier Drogba's ball in.
It was all Brazil for Chelsea as Ramires scored their second in injury time, taking them above City in the table.
There was joy for Kenny Dalglish too as his Liverpool side came out 2-0 winners over Sunderland at the Stadium of Light.
The referee Kevin Friend gave a free kick at one point but then changed his mind and awarded Liverpool a penalty!
Dirk Kuyt stepped forward to nail home the advantage from the penalty spot.
Luis Suarez sealed the deal in the second half as he powered in from a tight angle.
It was a rubbish day all round for Sunderland, who also had Mensah sent off for pulling back Suarez, and lost three players to injury.