Sergio Aguero scored his first Premier League goal in 14 months as Manchester City beat Fulham to move within 14 points of the Premier League title.
Manchester United reclaimed the top spot from Manchester City after they came from behind yet again to beat Fulham at Craven Cottage.
Manchester City may have made an indifferent start to the season by their high standards but victory against Fulham lifted them to fourth place in the Premier League.
Home grown Manchester City defender Tosin Adarabioyo joined Fulham on a permanent deal in what turned out to be a quiet transfer window.
Manchester City could not have had an easier passage to the fifth round of the Emirates FA Cup after Fulham had captain Tim Ream sent off in the sixth minute.