article_snippet.sent: United manager Louis van Gaal (right) celebrates victory with Ander Herrera at full-time .
article_snippet.sent: Aguero's quick-fire ton .
article_snippet.sent: Aguero's quick-fire ton will come as little consolation to Sergio Aguero that Sergio Aguero reached the 100-goal mark faster than any player in
article_snippet.sent: Manchester City’s history with Manchester City’s double at Old Trafford.
article_snippet.sent: The striker has had to wait for that honour, however, with The striker first goal ending a barren run stretching back eight hours and 39 minutes to the defeat home to Barcelona in February.
article_snippet.sent: Sergio Aguero (centre) celebrates after scoring the opening goal at Old Trafford on Sunday afternoon .
article_snippet.sent: Sergio Aguero (centre) celebrates after scoring the opening goal at Old Trafford on Sunday afternoon was Aguero's first goal since he scored for City against Barcelona at the Etihad back in February .
highlights_snippet.sent: Sergio Aguero reached the 100-goal mark faster than any other City player .
  