Mark McNulty's first-half goal has given Sheffield United a 1-0 lead at the break against Chesterfield at Bramall Lane to keep them on course for fifth in the League One table.
Both teams started brightly and Che Adams saw a shot blocked for the Blades before McNulty forced Tommy Lee into a good save.
Jay O'Shea pounced on a slip by United defender Jay McEveley on 26 minutes, but his 25-yard effort was well held by Blades goalkeeper Mark Howard.
McNulty gave the Blades the lead just after the half-hour mark when he turned sharply on the edge of the box before firing home with a fierce effort.
O'Shea almost restored parity just before the break, but he could only drag his shot just wide of the goal.
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