The Iron Under-23s were 3-1 winners away at their Southend United counterparts in a Premier League Cup second qualifying round clash on Tuesday.
An Adam Hammill brace during 14 minutes of stoppage time (due to an earlier Southend injury) helped seal the victory for Russ Wilcox’s side.
John McAtee had given his team an early lead before they were pegged back in the second half.
Scunthorpe now enter Group C of the Premier League Cup, where they will join West Bromwich Albion, Newcastle United and Hull City. Full details will be announced once confirmed.
McAtee had a chance in the opening 60 seconds, twisting and turning on the edge of the area and getting a shot away, but his attempt was blocked.
The Iron’s positive start continued as Lewis Butroid got into the box down the left side, getting on the end of a pass from deep, but the ball eventually got cleared.
With two minutes on the clock, McAtee put Scunthorpe ahead as he received a cross from Tom Pugh. The forward flicked the ball up and scooped it into the top left hand corner.
McAtee sent another danger ball into the box soon after, which was collected by the goalkeeper, while Hammill fired over after Mason O’Malley played a short free-kick to him.
Southend’s first chance came on 13 minutes when Tom Clifford took a left-footed free-kick, but the ball went over the crossbar.
A minute later, Southend attacked with a cross coming into the box from Terrell Egbri, which Clifford sent wide with a header.
On 20 minutes, McAtee won possession, and played it to Butroid. He then passed to Hammill, who found Reon Potts, but his effort went wide.
Southend then went close as Emile Acquah flicked the ball into the path of Erin Kinali, but his back-heeled effort went wide.
With 23 minutes gone, there was an Iron chance as Potts played the ball to Hammill, which the winger sent wide. Soon after, the ball fell to McAtee, who speculatively struck wide from 35 yards.
On 26 minutes, Southend’s O’Shane Stewart had a shot from the edge of the area but sent it well wide with his right foot.
After Hammill sent a free-kick over the crossbar, Acquah had a header deflected over at the other end for the hosts.
Soon after, Hammill tried his luck again from 30 yards but sent the effort over the crossbar.
The Iron attacked again in the 42nd minute and Butroid’s low driven ball into the box from the left was gathered by the goalkeeper.
Southend soon sent the ball into the box and it was headed against the crossbar by a home attacker and out for a goal kick.
There was an 11 minute stoppage in play straight after the second-half had got underway, as Acquah and Pugh battled in the air. The Iron’s No 8 was fine but the Southend forward needed the necessary treatment before being stretchered off.
Soon after the restart, Clifford sent an effort over the crossbar for Southend.
Then, Hammill sent a ball into the box which Hornshaw headed goalwards but saw saved.
In the 66th minute, Hammill tried to find a bit of space on the edge of the area and sent a low left-footed cross in but the goalkeeper got there just before Butroid on the opposite flank.
One minute later, the hosts levelled as Matt Rush bundled an effort on from close range after a cross came in from the left wing.
Hammill fired a free-kick over the crossbar soon after, while the hosts continued to threaten.
On 84 minutes, Hammill sent a free-kick into the box and it reached Pugh, whose shot was blocked and then Jacob Bedeau’s follow-up was saved.
In the second minute out of 14 of stoppage time, Benton twisted and turned before sending a left-footed shot over the crossbar for Southend.
On 94 minutes, attacking down the left, Hammill sent a low cross into the box but nobody could get on the end of it and the goalkeeper gathered.
Rush then sent an effort wide from three yards following a quick home side attack.
Moments later though, the Iron made it two as O’Malley took a throw from the left and played it to Pugh on the byline, who advanced into the area and laid it back to Hammill, who sidefooted home from around six yards out.
Then United won a penalty two minutes later as substitute Harry Jessop was brought down by Richard Taylor.
Hammill stepped up and sent the goalkeeper the iron way to seal the victory.
IRON: Collins, Horsfield, Butroid (Ben El-Mhanni, 86), Hornshaw, Rowe, Bedeau, O’Malley, Pugh, Potts (Jessop, 86), McAtee, Hammill (Cummings, 103).
IRON SUBS NOT USED: Kelsey, Wilson.