Blades remain pointless as Boro stays perfect
Middlesbrough made it four wins from four in the EFL Championship as it defeated rock-bottom Sheffield United 1-0, leaving the Blades still without a point this season.
A well-contested first half, which saw limited clear-cut chances, saw the sides go into the interval goalless.
But Boro asserted itself after the restart and, in the 64th minute, Tommy Conway guided the ball home after he was picked out by a pinpoint Matt Targett throughball.
With his side sitting top of the league, Rob Edwards has enjoyed a dream start to his tenure at The Riverside, while Ruben Selles's Blades are yet to pick up a point.
Middlesbrough has started the season with four consecutive victories for the first time since 1994-1995, a year in which it secured promotion to the Premier League.
Boro is also unbeaten in its past nine home league matches against Sheffield United – seven wins and two draws – recording seven clean sheets in that run since their 2-1 loss back in October 1997.