Gary Alexander made team of the day in News Of The World.
Gary Alexander punished his old club with a second-half double as Millwall climbed to third. The Lions patch home form looked set to strike again when Sim on Church put Orient ahead just after the break.
But Alexander had other ideas. First he cut inside Jordan Spence and rifled past Jamie Jones to level on 70 minutes.
And with three minutes left, he beat Tamika Mkandwire at the far post to nod home James Henry’s cross.
The Lions had a let-off as Scott McGleish missed an early penalty saved by david Forde after he was fouled by Andy Frampton.
Orient boss Geraint William said “That’s teh first time I’ve seen Scott side-foot a penalty.”
Gary Alexander’s late brace allowed Millwall to come from behind and take the spoils in this Londoin derby.
Orient were presented with an early penalty when Tony Charles upended Charlie Daniels as he broke into the area after eight minutes.