A first-half header from Nigerian centerback Danny Shittu gave Millwall a 1-0 win at Blackburn Rovers on Wednesday that set up an FA Cup semi-final at Wembley against Wigan Athletic.
Shittu, the Millwall captain, struck shortly before halftime to settle the quarter-final tie, three days on from the hard-fought 0-0 draw between the Championship rivals at The Den on Sunday.
Millwall are the last non-Premier League side left in the competition and are bidding to emulate their run to the final in 2004, when they lost 3-0 to Manchester United.
United are due to face Chelsea in the second quarter-final replay on April 1, with the winners in line to meet Manchester City on April 14.
Millwall had just seen a penalty appeal for handball against Jason Lowe dismissed when Taylor swung a corner into the box from the left that the strapping Shittu converted with a powerful downward header.