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Lys Mousset's first-half goal sealed a second home win of the season for Sheffield United as they defeated Arsenal 1-0 at Bramall Lane.
The Blades started well before Nicolas Pepe missed a golden chance for Arsenal after a slick counter-attack.
United went ahead on 30 minutes when Jack O'Connell's far-post header from a corner was turned in by the unmarked Mousset from close range.
John Fleck hammered a shot into the side netting after the break before Pepe had a free-kick saved.
Alexandre Lacazette and Gabriel Martinelli came off the bench as Arsenal searched for an equaliser but could not find a way past the joint-best defence in the league.
Sheffield United climb to ninth, on 12 points, while Arsenal drop to fifth on 15.
See: Sheff Utd report | Arsenal report
Next fixtures
Sheff Utd: 26 Oct v West Ham (A)
Arsenal: 27 Oct v Crystal Palace (H)
Match officials
Referee: Mike Dean. Assistants: Darren Cann, Dan Robathan. Fourth official: Simon Hooper. VAR: Andre Marriner. Assistant VAR: Neil Davies.
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