Japhet Tanganga scored the winning goal as in-form Millwall defeated Leeds 1-0, handing Leeds their first away loss of the season.
Tanganga, a former Tottenham player, secured the victory for the Lions, dealing a blow to Leeds who are one of the favorites for promotion this season.
After moving from Spurs to Millwall in January, Tanganga has been instrumental in the team's surprising run in the Championship.
Millwall secured their fourth consecutive 1-0 victory, showcasing their solid defense under Neil Harris.
Since Harris took charge in February, Millwall has been on a remarkable run, accumulating more points than any other team in the league.
Despite starting near the bottom of the table just two weeks ago, Millwall has now climbed to fifth place.
The match saw both teams creating chances, with Leeds missing a golden opportunity early in the second half through Wilfried Gnonto.
Despite Leeds' efforts to find an equalizer, Millwall's defense held strong, almost adding another goal late in the game.