The Iron made it back-to-back clean sheets against promotion contenders as they drew 0-0 with Gillingham on Saturday.United were in control of the game for the majority of it, but could not find a way through the Gills defence and ‘keeper Stuart Nelson.
The result moves the Gills up to third and ends their run of three straight defeats, while the Iron dropped to 15th.
Elsewhere in League One, Burton still find themselves four points clear at the top, despite having to settle for a 1-1 draw with Crewe.
Marcus Haber opened the scoring for second bottom Crewe, but Lucas Akins secured a point for the leaders in the first half.
Wigan remain in second, but they also had to settle for a point as they drew 1-1 with Peterborough, who ended a run of five straight defeats.
The hosts led through Will Grigg’s second half strike, but Marcus Maddison netted a delightful free-kick to grab a point with ten minutes left.
Walsall’s run without a win continued as they lost 3-1 to Barnsley, which led to the departure of Saddlers boss Sean O’Driscoll.
Tom Bradshaw scored for the hosts, but Ashley Fletcher, Josh Brownhill and Harry Chapman were all on target for Barnsley as they moved sixth.
Fifth placed Millwall continued their run of form with a 3-0 win over Blackpool, with Lee Gregory, Jed Wallace and Steve Morison all on target.
Coventry’s poor run continued as they dropped out of the play-offs as Ian Henderson’s late penalty gave Rochdale a 1-0 win.
At the bottom, Colchester could not build on their victory in the week as they fell to a 2-0 defeat to play-off hopefuls Port Vale.
Goals from Theo Robinson and Sam Foley secured a routine victory and moved Vale up to ninth, three points off the top six.
Oldham also remain in the bottom four, but their game against Swindon was called off due to snow.
Shrewsbury climbed out of the relegation zone as they beat fellow strugglers Doncaster 1-0, climbing above their hosts in the process.
Shaun Whalley’s corner went all the way in to decide the contest, giving Shrewsbury their third win in five games and dropping Blackpool into the bottom four.
Fleetwood missed the chance to pull further clear of the drop zone as they conceded a last minute equaliser to draw 2-2 with Sheffield United.
Goals from Ash Hunter and Marcus Nillson cancelled out Matty Done’s opener, but they could not hold on as Che Adams levelled from the penalty spot.
Meanwhile, Lee Novak got a late winner as Chesterfield beat Southend 1-0, and Bury and Bradfprd shared the points in a 0-0 draw.
Next up for the Iron is the visit of local rivals Doncaster on Tuesday night, with United looking to build on recent good performances.
Tweets by @SUFCOfficial