A superb Newcastle defensive performance and a bizarre moment of VAR saw Sheffield United's unbeaten run come to an end with a 2-0 defeat at Bramall Lane.
The Blades had gone seven Premier League games without defeat until Steve Bruce's side pulled off a textbook away performance - having little by the way of possession but limiting chances and taking their few opportunities.
Allan Saint-Maximin used his head to nod the visitors in front before Jonjo Shelvey kept his head to play on despite the linesman flagging him offside to finish past Dean Henderson to clinch victory.
Sheffield United's players cleary stopped when the flag went up for what was an incorrect offside decision, and the VAR replay spotted as much and then awarded the goal.
Strange VAR moment aside, it was a deserved victory for the Magpies - a third win in five - and one that puts them level with Chris Wilder's side in the table.
Sheffield United started the game well and in fact played well throughout with plenty of pace and endeavour, with Newcastle keeper Martin Dubravka pulling off a number of saves.
Tt was Newcastle who opened the scoring though with their first real attack 15 minutes in - Javier Manquillo crossing for Saint-Maximin to nod in at the far post from eight yards out.
The Blades threatened again either side of the half-hour mark as Billy Sharp, stretching to get on the end of Stevens' through ball, could only poke his attempt into the side-netting, before John Egan sent a powerful header straight at Dubravka.
No question of the main talking point though, as the flag was raised when Paul Dummett's long ball forward was flicked on by Andy Carroll and Shelvey found himself clean through on goal after making a run from deep.
The Blades defenders totally stopped playing, believing the Newcastle midfielder to be offside, while goalkeeper Dean Henderson made no attempt to save the ball as Shelvey fired into the back of the net, knowing the goal would be checked.
It was a very tight decision but Carroll was inches onside and the goal stood to give the Magpies a vital victory on Thursday night.