but roared back with four second-half goals to stay in the driving seat at the top of the table.
Party time: 14 May 2011, Ewood Park, Blackburn 1-1 United. The Reds secured the point needed to become the most successful English league team with 19 titles.
Glory story: Spurred on by the heartbreak of losing the title in the dying seconds of the 2011/12 campaign and with the addition of one RvP to the squad, the Reds came back with a vengeance to secure a 20th title triumph... and with four games to spare.
Top gun: Robin van Persie, 25 league goals
Turning point: Last-minute victories at City and at home to Newcastle in December were important, but the second weekend in February when City lost at Southampton and United beat Everton (the team Sir Alex claimed we'd thrown the title away against the previous campaign) put the Reds 12 points clear and well in control of the title race.
Party time: 22 April 2013, Old Trafford, United 3-0 Villa. A first-half Robin van Persie hat-trick - the second goal of which was an absolute gem - secured the three points needed to seal title glory.
You can post your messages of thanks to Sir Alex at facebook.com/manchesterunited, tweet using the hashtag #thankyousiralex or post on our Talking Reds message board here and your comments could be selected for a special Sir Alex book.