Riyad Mahrez and Jack Grealish were on target as Premier League leaders Manchester City beat Championship strugglers Peterborough United 2-0 on Tuesday to advance to the FA Cup quarterfinals.

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City struggled to break down the second tier’s bottom club until Mahrez put them ahead on the hour and then Pep Guardiola’s side doubled their lead with a goal of prime quality.

Phil Foden struck a ball from deep, which Grealish brought down with a sublime touch before a clinical finish for his first goal in the FA Cup.