|Venue: iPro Stadium
MILLWALL head into the international break on a high after grinding out a well-earned goalless draw at promotion-chasing Derby.
The Rams have been scoring freely in recent weeks but could not find a way past a well-drilled and well-disciplined Lions back four.
David Forde was only seriously tested on one occasion when he parried Jamie Ward's shot in the first half.
Scott McDonald could have stolen the points for the visitors late on but his half-volley flashed narrowly wide.
After impressing as a second-half substitute against Birmingham, Aiden O'Brien was handed his first Millwall start on his 21st birthday.
Matthew Briggs also made his league debut for the Lions at left back, replacing Scott Malone, while Byron Webster came into the back four at Mark Beevers' expense.
Justin Hoyte (dropped) and Mathias Ranegie (hamstring) were also missing as Richard Chaplow and Martyn Woolford were named in Ian Holloway's line up.
As well as making five changes in personnel, boss Holloway reverted to a 4-3-3 formation with Alan Dunne moved to right back and Shaun Williams playing as a centre half.
The hosts started on the front foot and Ward, playing on the right of Derby's front three, fired wide twice in quick succession inside the opening five minutes.
Ward then teed up top-scorer Chris Martin for a shot inside the box but the former Norwich City striker scuffed his effort well off-target.
Millwall had a penalty appeal turned down in the tenth minute when Lee Gregory appeared to be pushed in the back as he challenged for a header at a corner.
After a nervous start to the game, the Lions settled into their stride and it took a last-ditch tackle from Zak Whitbread to deny O'Brien a shooting opportunity inside the box.
In the 22nd minute, Chaplow's clever pass released Gregory down the right wing but he fired straight into the arms of Lee Grant after cutting inside.
Moments later, a quick counter-attack involving Scott McDonald and Jimmy Abdou ended with O'Brien sending a dangerous low cross into the box which was turned behind for a corner.
And from the resulting set piece, Briggs lashed a swerving drive wide of the post as Millwall went agonisingly close to breaking the deadlock.
Forde then parried Ward's drive before Jordan Ibe was booked for diving after he went to ground under pressure from the Lions goalkeeper.
With the break approaching, Gregory curled another shot into Grant's arms and O'Brien's effort deflected behind for a corner.
Derby came out swinging at the start of the second period and saw Ibe's drive brush the side netting after the Liverpool loanee had got beyond Dunne.
But the Rams soon ran out of steam again and saw virtually all of their shots blocked at source by Millwall defenders, much to the frustration of an irritable home crowd.
At the other end, Chaplow's quickly-taken free kick found McDonald, whose shot was cleared, but the ball came back to him and his half-volley zipped just wide.
That was the sum of the goalmouth action in a tight second period but the Lions' superb defensive display more than merited a much-needed point.