After a goalless draw with the Red Devils, which went to extra-time, Boro claimed a memorable 3-1 win in the subsequent penalty shootout in front of 10,000 jubilant away supporters. Scroll down and flick through our picture gallery to see the side which played:
13. Sub: David Nugent
Was a popular figure at the Riverside despite spending just one season in the North East. After a spell at Derby, the 34-year-old is now back at Preston where he's made three appearances this season. Photo: Matthew Peters
14. Sub: Adam Clayton
Into his sixth season at Boro and has been a regular starter in the time. Another player who will be out of contract at the end of the campaign. Photo: John Peters
15. Manager: Aitor Karanka
Still out of work after leaving Nottingham Forest in January. Photo: Getty Images