As for the Reds' matchwinner, Sir Alex felt it was fitting that Giggs stole the headlines on his landmark appearance.
"To score the winning goal with the last kick of the ball in his 900th game... I think his career deserved that," added the manager. "It was a marvellous finish and a great cross from Ashley Young.
"For a player to play for one club for 900 games is exceptional and it won't be done again - an amazing career and an amazing man."