Millwall U23s returned to winning ways at Calmont Road on Monday afternoon following a solid 2-0 victory over table-toppers Ipswich Town in the Professional Development League.
A stunning strike from Jesse Debrah put The Lions ahead 10 minutes into the second half, before a disciplined display - against a side containing senior Championship players - was capped after 72 minutes through Isaac Olaofe's smart finish.
The game started in an even fashion, with both sides attempting to push forward but without anything clear-cut created, until Aaron Drinan found himself in space to head wide from close-range for the visitors.
Ipswich then came inches away as half-time approached, with Corrie Ndaba crashing a volley onto the crossbar from a corner delivery.
Millwall broke forward in the same phase of play and Olaofe had two bites of the cherry to open the scoring - first denied by Harry Wright, before firing the rebound wide.
A positive opening to the second half from Kevin Nugent's side was rewarded 10 minutes after the restart, as Debrah was alert to a blocked shot from James Brown to arrow a lethal finish past Wright and into the top corner of the net.
Ipswich's attempts to claw a way back were soaked up by a resolute Millwall defence, and Rob Harvey could have doubled the lead with an ambitious long-range strike kept out by Wright.
It however was not to be long before The Lions found a second, as Harry Donovan's marauding run into the area saw the ball find its way to Olaofe, who made no mistake with a low side-footed shot into the bottom corner.
Nugent's young team saw the game out comfortably towards the closing stages, with a victory and clean sheet closing the gap from the summit to four points.
Millwall: Martin; Brown, Debrah, Parker, Topalloj (Tiensia 78'); Harvey, Hanson, Donovan, Saunders-Henry; Olaofe, Alexander
Subs not used: Sandford, Skeffington, Mitchell, Taylor