Jermaine Beckford's winner gave League One leaders Leeds a famous FA Cup victory over their fierce rivals Manchester United in a thrilling tie at Old Trafford.
Forty-two league places separate the two clubs following the Yorkshire club's dramatic fall from grace during the last decade but Simon Grayson's side showed the rate of their recent revival with a memorable triumph.
Man Utd had never before lost in the third round of the Cup - or been knocked out of it by a lower-division side - during Sir Alex Ferguson's 23-year reign as manager, but they began 2010 on the wrong end of their biggest upset in this competition since they were dumped out by Bournemouth in 1984.Back in the day Leads United was one of the best teams in English Football. In the last decade they've fallen on hard times and gone down two divisions. Wowzers.