Pep Guardiola says Manchester City will take it one game at a time before Sunday"s Premier League encounter with Liverpool. The champions have not won a match since beating Southampton 1-0 on 26 October, and have lost three straight Premier League games. Guardiola said: "We will be back, I know that ... I know the people say: "Why is Pep not in trouble, why is he not sacked?" I have this margin because of what we have done over the last eight years." Despite his track record – City have won the past four Premier League titles – he said: "I have to prove myself now." ‘I have this margin’: Pep Guardiola feels protected from sack by past success