Sergio Aguero, who scored his seventh goal in five games since returning from a calf injury, was substituted with another muscular problem - with Manuel Pellegrini admitting he is unsure if it will sideline the Argentina forward for any length of time.
Manuel Pellegrini: "We will see tomorrow with the doctor.
"He has an injury in his hamstring and we will see how serious it is.
"We don't have an indication until tomorrow."