Click and scroll your way through the gallery, and take a step back in time to see how United have got on in their last ten clashes against the Blues...
1. March 2007 - Stamford Bridge
3-0 LOSS: The game saw Chelsea's Andriy Shevchenko score a rare goal for the Blues, as Neil Warnock's side were soundly beaten. The game also saw Rob Hulse suffer a broken leg. (Photo by Phil Cole/Getty Images) Photo: Phil Cole
2. October 2006 - Bramall Lane
2-0 LOSS: Danny Webber missed a golden chance to give the Blades a first half lead, but saw his penalty saved by Henrique Hilario. Chelsea went on to win the game comfortably.(Photo credit: Paul Eliis/AFP/Getty Images) Photo: PAUL ELLIS
3. May 1994 - Stamford Bridge
3-2 LOSS: On a dramatic final day of the season, Sheffield United were relegated after tense battle against Chelsea. The Blues ended the Blades' hopes of survival with a stoppage time winner courtesy of Mark Stein. (Photo by Anton Want/Allsport/Getty Images) Photo: Getty Images
4. November 1993 - Bramall Lane
1-0 WIN: Scottish striker Willie Falconer was the hero for the Blades on this occasion, as his deflected header whizzed past Blues stopper Dimitri Kharin. (Photo by Howard Boylan/Allsport/Getty Images) Photo: Getty Images