Charlton Athletic and Millwall remain goalless after 45 minutes at The Valley.
Charlton Athletic and Millwall are deadlocked after 45 minutes of a frantic South London derby at The Valley.
The Addicks made a fast start and could have been ahead inside five minutes when Bradley Pritchard's strike from range was spilled by David Forde.
Danny Haynes chased the rebound but Forde recovered just in time to scramble the ball clear.
Millwall countered and had a great chance of their own through Liam Trotter, who reacted quickest to Rob Hulse's effort but could only turn wide from close range.
Karleigh Osborne was forced off early on for the Lions, who sent on Tottenham Hotspur loanee Adam Smith in his place.
Forde denied Haynes for a second time before Callum Harriott's low shot was pushed round the post as Charlton finished the half in control.
Millwall held firm until the interval as both sides showed intent to break the deadlock.
Result: Millwall end Luton FA Cup dreams >