David Brooks scored nine minutes from time to earn Sheffield United a 2-1 win against Leeds United and send his side top of the Championship table.
The Blades were in front early on through a Billy Sharp header, but they squandered a number of good chances and were pegged back by Kalvin Phillips before the end of the first half.
Young substitute Brooks inspired his side to a fifth victory in six games, however, tucking the ball past Andy Lonergan late on to earn bragging rights and all three points.
Relive how the 90 minutes of action unfolded with Sports Mole's live text coverage below.
STARTING XI: Lonergan; Ayling, Pennington, Cooper, Anita; Phillips, O'Kane, Vieira, Saiz, Alioski; Lasogga
SUBS: Wiedwald, Shaughnessy, Jansson, Roofe, Dallas, Hernandez, Grot
STARTING XI: Blackman, Baldock, Stevens, Fleck, O'Connell, Basham, Clarke, Sharp, Coutts, Carter-Vickers, Duffy
SUBS: Moore, Lundstram, Donaldson, Wright, Lafferty, Brooks, Carruthers
Thomas Christiansen: "I think it will be a very tough game and small mistakes will decide it. They're a very good team and you should never underestimate a team who come from League One - this is the proof. It's a good way for us to measure ourselves for where we want to be. If we win then we will be one point behind them. The fans have been massive since I arrived and I hope that the team will perform in a way that makes them feel proud."
Chris Wilder: "We have to recognise that they are going to bring their best game to the table. I don't think their supporters will demand any less than that. There's going to be 35,000 there on a Friday night under the lights. It doesn't get any bigger than this. They're geared up to get out of the division. That is their goal and their aim and with that comes recruitment and money spent. They've had a couple of blips but they've also had some really good results."
© Getty Images
LEEDS UNITED SUBS: Wiedwald, Shaughnessy, Jansson, Roofe, Dallas, Hernandez, Grot
SHEFFIELD UNITED SUBS: Moore, Lundstram, Donaldson, Wright, Lafferty, Brooks, Carruthers
© Getty Images