Hull City cruised into the Papa John’s Trophy knockout stages with a convincing victory over local neighbours Grimsby.
Two goals in five first-half minutes from Martin Samuelsen – the first a stunning 20-yard effort – put the Tigers firmly in the driving seat.
Substitute James Scott added a spectacular third 11 minutes from time and Samuelsen missed the chance to complete his hat-trick when his penalty was saved by Mariners keeper James McKeown.
The result guaranteed Hull City top spot in Northern Group H and a home tie in the round of 32.
Grant McCann named an entirely different XI to the one that started against Burton, with Lewie Coyle captaining the side after recovering from a shoulder injury.
The Tigers only needed to avoid defeat to progress to the next round, in the first competitive meeting between the two sides in 22 years.
But the hosts almost fell behind inside the first minute as Max Wright burst through after latching onto Sean Scannell’s header but Alfie Jones came across to make an important intervention.
It took Hull City a little while to impose themselves on proceedings; Callum Jones’ deflected 25-yarder dribbled wide, while Tom Eaves headed over from Coyle’s clipped cross.
After a fairly uneventful opening 27 minutes, the deadlock was broken in stunning fashion by Samuelsen.
Regan Slater laid the ball back to the Norwegian, who shifted the ball onto his left foot before curling a wonderful 20-yard shot into the top corner.
A first goal in Hull City colours for Samuelsen was swiftly followed by a second five minutes later as the Tigers took a firm grip on the contest.
Hakeeb Adelakun jinked past Ludvig Ohman on the left and looped the ball over McKeown to the back post, where Samuelsen was on hand to nod home from virtually on the line.
Despite Grimsby appeals for offside, replays conclusively proved Samuelsen was on.
The Tigers were in complete control and Adelakun looked to get his name on the scoresheet with a curling attempt which sailed well wide.
There was a moment of concern on the stroke of half-time when Scannell took down Wright’s looping cross but his shot on the turn flew high over the bar.
A quick free-kick from Dan Batty almost brought about a third goal eight minutes after the restart but Eaves, getting across Luke Waterfall, couldn’t divert his header on target.
George Long was called into action for the first time just before the hour, pushing away Matt Green’s near-post effort from Luke Spokes’ in-swinging corner.
After surviving that rare Mariners opportunity, the Tigers went on the hunt for more goals.
Thomas Mayer, introduced moments earlier, cut in from the right and unleashed a stinging strike which McKeown parried.
Fellow substitute Scott reached the byline and fizzed in a low cross that Samuelsen, looking for his hat-trick, stabbed wide.
Samuelsen saw another attempt blocked after excellent work from the lively Mayer, who fired the rebound over.
The Austrian then played a neat one-two with Callum Jones before being thwarted by McKeown as he tried to round him.
But there was nothing the keeper could do to prevent Scott from making it 3-0 with another special strike with 11 minutes remaining.
Cutting in from the left, the Scottish forward unleashed a thumping right-footed drive that flew into the far top corner.
Samuelsen then had the chance to complete his hat-trick after being brought down in the area but his penalty was saved by McKeown, who also kept out his follow-up header.
Ian Holloway's visitors rallied in the closing stages, with Long denying Spokes and George Williams steering wide, but it proved far too little, too late.
Hull City: George Long; Lewie Coyle ©, Alfie Jones, Sean McLoughlin, Brandon Fleming; Dan Batty, Callum Jones (Max Sheaf 74’), Regan Slater; Martin Samuelsen, Tom Eaves (Thomas Mayer 59’), Hakeeb Adelakun (James Scott 59’).
Subs: Harvey Cartwright, Festus Arthur, Matty Jacob, Billy Chadwick.
Grimsby Town: James McKeown ©; Danny Preston, Daniel Rose, Ludvig Ohman, Luke Waterfall, Matt Green (Alhagi Sisay 59’), James Hanson, Sean Scannell, Luke Spokes, Max Wright (Owura Edwards 53’), Kyle Bennett (George Williams 71’).
Subs: Ollie Battersby, Joseph Starbuck, Duncan Idehen, James Morton.