After a largely successful start to the season, Lee Bowyer’s Charlton suffered a disappointing 1-0 reverse to high-flying Preston at The Valley on Sunday.
Indeed, Charlton have gone slightly off the boil in recent weeks, winning just one of their last six games.
The Addicks will be looking to get back on track this weekend, however, are unlikely to face an easy task against Gary Rowett’s Millwall.
The Lions suffered a narrow defeat at Reading last time out, but a week previously comfortably beat Stoke at The Den, and any team going to South-east London know they will be in for a battle.
Here, we look at two player-battles that could decide the outcome of the game:
Conor Gallagher v Shaun Williams
Chelsea loanee Conor Gallagher has made an inspirational start to his senior career at Charlton, scoring five goals and providing one assist from 14 starts.
His high-energy game and dribbling ability and have caused opposition defences all sorts of problems; his passing is good and he has a knack of arriving in the box at the right time.
His impact has been so great that it led to recent concerns about Chelsea recalling him in January, however, Bowyer quashed those concerns in an interview with londonnewsonline.co.uk.
It would be a massive blow to The Addicks but it doesn’t seem likely.
Of course, he’ll definitely still be around come Saturday, and the responsibility of nullifying the threat of Gallagher is likely to fall to Shaun Williams.
The Republic of Ireland international is a defensively-minded central midfielder and very combative in the middle of the pitch.
Former Birmingham boss Rowett will be hoping he can make his mark on the game and limit the influence of Gallagher, otherwise it could be a long afternoon for his side.
Jed Wallace v Ben Purrington
Millwall stalwart Jed Wallace has had another impressive season so far at The Den on the right wing.
The former Wolves midfielder has scored six goals and contributed one assist, and has arguably been the Lions’ best player.
In contrast, Charlton left-back Ben Purrington has had a tough season, suffering an injury and a general lack of form.
Purrington returned from injury against West Bromwich Albion two weeks ago, but has struggled on his return to the side, even coming in for criticism for squandering a great chance against Preston last weekend.
With Wallace in such good form, Purrington – and consequently the Charlton defence – could be in for another tough afternoon.