Millwall secured a 1-0 victory against Leeds United thanks to Aiden O'Brien in the 73rd minute.

After drawing surrendering a two-goal lead in midweek against Queens Park Rangers, the Lions were able to win their fourth consecutive home game against Leeds.

Neil Harris' men now move into 15th in the Championship after seven games.

Here are five things we learned ...

Home fans roar the Lions onto victory 

Millwall, playing in front of their highest home league attendance [16,447] since December 1, 2012, put on a show and their supporters responded by creating a cup final-like atmosphere at the Den.

Even when chances were being missed, the home fans stuck with their team and helped them over the line in one of their best league victories in recent times. 

Jed Wallace is finding the consistency 

Three goals and one assist in eight games is a good return for the summer signing from Wolves and, despite not scoring or assisting against Leeds, he was the catalyst to Millwall’s performance on Saturday.

It did not take him long to find out he had the beating of Vurnon Anita and went past him whenever he got the chance, putting over two or three dangerous crosses.

He played a crucial part in Millwall’s goal too, playing a reverse pass to Fred Onyedinma, who created the opening for O’Brien. 

The Lions can compete with the big boys 

Millwall showed today that they are not just here to make up the numbers. Leeds turned up at the Den on the back of four straight wins without conceding. Based on the performance, you would have thought Millwall were the team on top of the Championship table.

The Lions were first to every ball, and wanted it more than their opponents. Neil Harris’ side proved that this performance is not a one-off, particularly after strong displays against Nottingham Forest, Norwich City and Queens Park Rangers this season.

Three teams that will be looking to push for a top-six finish. 

Fred Onyedinma takes his chance 

Onyedinma has had to be patient this season, appearing from the bench in six of Millwall’s seven Championship games, and has certainly had to wait his turn.

His opportunity came against Leeds and he was in no mood to let it up. The 20-year-old scared the life out of the Leeds backline at times. The visitors could not cope with his pace and power, and if he continues to perform like this, he will give Harris a potential selection headache when Lee Gregory returns from suspension.

He also played a crucial part in the goal, receiving Jed Wallace’s pass before O’Brien slotted home. 

Morison still unable to get off the mark 

It can only be a matter of time before Steve Morison gets his first goal of the season. He thought he opened his account but was rightly flagged offside as he slammed home at the far post.

He missed a few good opportunities, most notably midway through the second-half, firing straight at goalkeeper Felix Wiedwald, but if he continues to get in the positions then the goals will come.