People spoke about the comeback from two goals down to win 3-2 at Aston Villa as being typical of Sir Alex's side.
However, it was only the fifth time during the manager's great reign that such a result was secured from a 2-0 deficit in a domestic game.
Can you recall the other four times United have bounced back from 2-0 down to win 3-2 in a domestic fixture during Sir Alex's tenure?
Check out the answers in the black box on the right.
More trivia questions: Earliest away goals at OT | Goalkeepers meeting the Reds | Oldest scorers in Premier League | Internationals at Old Trafford | Old Trafford penalties | England's seven Reds | Alan Hardaker Trophy winners
3-2 v Man City (A)
Premier League, 1993
3-2 v Aston Villa (A)
FA Cup, 2002
3-2 v Blackpool (A)
Premier League, 2011
3-2 v Man City (N)
Community Shield, 2011