Read our in-depth guide to Saturday's Sky Bet League One clashMillwall will look to return to winning ways when they host Peterborough United at The Den on Saturday (3pm).
Tuesday's defeat to Scunthorpe United in SE16 was a first loss in seven League games for The Lions, who are still sixth in the table.
Graham Westley's Posh side are six points behind Millwall in 11th having lost three of their last four League matches, though two of those defeats were against high-flyers Burton Albion and Gillingham. Westley will be looking for a response from his side at The Den after they lost 4-0 to Bradford City last weekend.
What the managers say
Writing in his programme notes for Saturday's fixture, Neil Harris says: "The players are striving for consistency, especially at home, and they are desperate to do well. What we clearly have to do is get the mix right between showing an urgency and determination in our attacking play, and being calm and methodical enough to get the ball into the right areas.
"Even in Tuesday night's display there were positives, and we have to build on those whilst learning from our mistakes as we take on a Peterborough team full of flair and attacking potential. We must defend diligently, be competitive and pose a real threat going forward, as we have done in the majority of games recently."
Read more from Harris in this weekend's matchday programme, available to buy around the ground for just £3.
Graham Westley: "Myself and Macca (Grant McCann) went to watch the game and Scunthorpe took their opportunities. They played well, but Millwall had their opportunities to win the game themselves.
"Millwall losing was probably the worst thing that could have happened in a way. That result will steel them for our game. They obviously won't want to lose at home twice in the same week.
"Millwall actually played very well and had chances to get something from the game so they won't be lacking confidence.
"We have some ground to make up, but it's a very close division and a string of wins will soon make the League table look very different."
More quotes from Westley are available to read by clicking here.
Millwall will once again be without midfielder Shaun Williams, who serves the second match of a two-game suspension.
Ed Upson, pictured above playing against Posh earlier this season, limped out of Tuesday's defeat to Scunthorpe and is doubtful for this weekend's visit of Peterborough. Ben Thompson came on in his place at The Den and could well start on Saturday should his midfield colleague not be able to make it.
Shaun Cummings remains sidelined while Tony Craig is a long-term absentee.
Peterborough look set to welcome midfielder Harry Beautyman back into the squad after he missed last week's defeat to Bradford due to illness.
Experienced centre-half Gabriel Zakuani came off against The Bantams and will be assessed ahead of Saturday's game.
Joe Gormley and Jermaine Anderson remain long-term absentees.
This weekend's fixture will be the 31st meeting between Millwall and Peterborough United in all competitions.
Of the previous 30 encounters, The Lions have won 14 compared to 10 for Posh, with the remaining six matches ending in draws.
The clubs have already met twice this season, with Millwall winning 1-0 at The Den in an Johnstone's Paint Trophy tie before Peterborough secured a 5-3 victory at London Road in October.
Millwall are 6/5 favourites with Sky Bet to earn all three points, while a Peterborough victory can be backed at 11/5.
For these odds and many more ahead of the game, visit Sky Bet.
Full match commentary will be available on Lions PlayerHD from around 2.50pm.
Regular updates will also be posted on @MillwallFC, the club's official Twitter account.
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