Millwall U21s win 2-1 in top of the table clash.
In the first half, Millwall took the lead on twelve minutes but Chris Regis levelled things up just before the break.
A tight second half saw the all important winner coming on seventy three minutes, scored by Millwall's Adam Edgar.
The two sides were on the same points prior to the game, both gunning for second place in the league, so it was a vital win for the visitors.
Although the result didn't go the U's way, there was good news as Alex Wynter returned from injury and played sixty minutes.
And the first team centre half had a steady hour for the U's at the back.
The first half was a chance with only a few half chances, as both keepers watched on with much of the game played in the centre of the pitch.
Millwall probably edged that first 45 minutes and got their noses in front when Chesmain's marauding run forward was ended with a trip in the box.
Farrell grabbed the ball and slotted home the penalty - just - past the despairing dive of James Bransgrove.
The U's were not at their fluent best in the first half, but finished the half strongly and got level four minutes before the break.
As the ball came in from the right, the clearance was scuffed by the Millwall defence and Chris Regis took a touch before burying his shot from the edge of the box.
Level at the break, the U's came out much brighter in the second half and Louis Dunne and Charley Edge both went close to putting the home side in front.
However, it was Millwall who found the crucial goal of the game.
Tosin Olufemi looked to have been fouled in his battle on the byline, but the referee was unmoved and the ball fell to Edgar to smash home from six yards out.
Despite the U's second half endeavours, they couldn't get level for a second time and it finished 2-1 to the London outfit.