Matt Done's first-half goal gave Sheffield United a 1-0 victory over Peterborough to make it four straight league wins.The hosts were on top in the early stages of the game with Billy Sharp putting a first-time effort off target, Daniel Lafferty seeing his drive deflected wide and Done forcing Luke McGee to make a superb reflex save.Done scored the game's only goal after 13 minutes, steering the ball past McGee at the near post after meeting Kieron Freeman's low cross.Peterborough's Chris Forrester then had a long-range shot deflected wide while Blades goalkeeper Simon Moore produced a fine save down to his right to keep out Paul Taylor's shot on the turn.Substitute Stefan Scougall went close to scoring a second goal for the home side in the second half when his 20-yard effort was palmed wide by McGee.Moore protected his side's lead when he pulled off a great save to keep out Gwion Edwards' close-range shot. The keeper also stopped efforts from Forrester and Marcus Maddison.