Callum O'Hare wheels away after scoring for Sheffield United against Watford
Callum O'Hare was Chris Wilder's matchwinner again as he earned Sheffield United their first home victory to mar Javi Gracia's Watford return.
O'Hare scored the solitary goal at Oxford to give United their only other win this season in Wilder's second game back.
And he delivered again when he poked home from close range to give the Blades their first win at Bramall Lane and lift them off the bottom of the Championship on goal difference above their city rivals Sheffield Wednesday.
Wilder will hope this will be the turning point after losing three of his first five games in his third spell back as manager and Dutchman Jairo Riedewald made his debut in the final quarter following his arrival on a free transfer on Friday.
Imran Louza hit the bar late on for Watford and Gracia had hoped for better in his first game back in charge of the Hornets.
Watford were poor and their lacklustre display was summed up by the fact they only mustered one effort on target.
Gracia got a great reception from the Watford fans and Luca Kjerrumgaard managed their only shot on target when his left-foot effort was saved by Blades goalkeeper Michael Cooper.
On-loan Aston Villa midfielder Louie Barry came in for the injured Gus Hamer and Mark McGuinness had a header from Barry's corner saved by Egil Selvik in the Watford goal.
McGuinness then nodded wide before Selvik again denied the home side, saving from Japhet Tanganga's header.
Watford had moments without capitalising on them and Nestory Irankunda had a couple of efforts, while Kjerrumgaard missed a chance.
Caleb Wiley squandered a great opportunity to give Watford the lead when he sliced his effort wide in a huge let-off for the Blades.
They took full advantage and O'Hare broke the deadlock on 59 minutes when he touched home Andre Brooks' effort after Tyrese Campbell's shot was saved.
Watford tried to rally and the closest they came was four minutes from time when Louza curled a shot against the bar from Kwadwo Baah's pass.
'This is why I do it' - reaction
Sheffield United manager Chris Wilder told BBC Radio Sheffield:
"It was in the 93rd minute and I got asked the question by one of the punters. He said 'why do you do it?'. I've got to say that for about 10 seconds I scratched my head and I thought 'why do I do it?'.
"Then that roar at the final whistle, I knew then why I do it and all those who come know it. To follow your team, regardless of whether you're top of the league or at the bottom, it's for these moments. I've had a lot of moments like this and this group is trying to produce more of them.
"The players gave everything for that shirt today and everybody in the ground saw that.
"I've said to them afterwards, 'don't kid me, don't kid the punters. That's the bare minimum we need to produce'."
Wilder: 'Gave everything for that shirt today'
Watford boss Javi Gracia told BBC Three Counties Radio:
"We knew before coming here that it would be a demanding game, a tough game because we knew our opponent would be aggressive, they would have pressure.
"In the beginning of the second half, we had a big chance to change the game if Caleb [Wiley] had scored.
"You have to take this chance. If you don't, it's normal that the team playing at home, they find some moments and they play better. They created some chances and they scored the goal.
"It was an equal game where the details made the difference. That's all."
Javi Gracia: "They took their chances...we didn't"
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