United were beaten 4-0 at Newport County on Tuesday night.
The Iron made four changes going into the match, with Jacob Bedeau, Jem Karacan, Abo Eisa and Teddy Howe coming in for Devarn Green, Kevin van Veen, Lewis Spence and Jai Rowe.
With a minute gone, Ryan Loft controlled a clearance and looked to send Eisa through on the overlap, but the attacker’s run had already progressed beyond the pass. He then closed down home goalkeeper Tom King's clearance.
Alfie Beestin was fouled in the fourth minute, with the referee playing a good advantage as Eisa came away with possession. He was dispossessed on the edge of the box just as he shaped to shoot.
The first chance of the game came three minutes later when a Newport corner was played short and was eventually worked to Jason Demetriou on the edge of the box. His first-time left-footed shot curled over the bar for a goal kick.
With 13 minutes gone, Howe latched onto a loose ball on the right following an aerial challenge involving Loft. He beat Ryan Haynes and squeezed in a cross, but King gathered the ball.
In the 18th minute, Alex Gilliead looked to play in behind the back four with Howe making an overlapping run after Bedeau recycled his own throw-in. Howe looked to have won a corner, but was penalised for a foul on Haynes.
Bedeau then twice headed away in the area as Aaron Lewis sent in a long throw from the left before a cross came looping in.
Soon after, Howe worked a throw to Gilliead before receiving the ball back to cross. The ball was cleared as far as Karacan, who controlled and shot, with his goal bound effort blocked by a defender.
With 29 minutes gone though, the hosts took the lead following a cross from the left side which was headed into his own net by George Taft as he attempted to clear.
Then, five minutes later, Mickey Demetriou connected to a Newport corner from the right to head into the far corner of the net.
On 39 minutes, there was a third for Newport as Lewis Collins diverted the ball into the back of the net from close range.
Four minutes into the second period, Loft headed behind Josh Sheehan’s free-kick into the area for a corner, with Scot Bennett winning the header from that set-piece, as the effort went over the bar.
With 54 minutes played, Howe latched onto the ball following a throw-in and saw his cross turned behind for a corner. Mason O’Malley’s set-play was sent into the six yard box and took a touch off a Newport player for another corner.
Emmanuel Onariase connected to Gilliead’s subsequent corner, sending his header over the crossbar.
After 58 minutes, Beestin strode down the left channel, beat his man and curled in a cross. Loft connected with a header on goal, with King saving the effort.
Four minutes later, Labadie had a go from 35 yards and saw his effort fly wide of the target.
Gilliead seized on a loose pass in the 65th minute to drive into space before hitting a low shot from outside the box which King got down to save.
There was a double Scunthorpe change soon after as Green and van Veen came on for Eisa and Loft.
Newport substitute Nicky Maynard went through on goal in the 79th minute, as the offside flag stayed down, with his lob bouncing just before the goal line, hitting the bar and going over.
Soon after, at the other end, Beestin sent an effort just over the crossbar after the ball dropped to him on the left side of the area.
With five minutes left, the hosts added a fourth when Demetriou headed home following a free-kick from the right.
On 88 minutes, van Veen took aim with a free-kick from the left, bending the effort towards goal, with the ball hitting the top of the net.
There were four minutes of added time, with the one final chance of note coming the way of Green, who fizzed a low effort from the edge of the area that King tipped away at his bottom right-hand post.
United return to action on Saturday when they make the trip to take on Bradford City (3pm kick-off).
NEWPORT: King, Haynes (Ellison, 71), Bennett, Demetriou, Shephard, Lewis, Hartigan, Sheehan (Dolan, 71), Labadie (Gambin, 71), Collins (Telford, 83), Amond (Maynard, 63).
NEWPORT SUBS NOT USED: Townsend, Ledley.
IRON: Howard, Taft, Bedeau, Onariase, Gilliead, Loft (van Veen, 69), Eisa (Green, 69), Beestin, Karacan, Howe, O'Malley.
IRON SUBS NOT USED: Watson, Spence, Rowe, Jessop, McAtee.