NOTTINGHAM Forest boss Sean O'Driscoll believes his side's match against in-form Millwall will be settled by "fine margins".
The Lions are unbeaten in their last six but Forest have only lost once during that period and are sitting just outside the play-off positions in 7th.
And O'Driscoll says he is expecting a tight encounter – insisting that Millwall will cope without injured duo Paul Robinson and Jack Smith, plus the suspended Alan Dunne.
"If they can get their best 11 out they’ll be a match for anybody," he told his club's official site.
"The problem with clubs in the Championship is that if you lose one or two key players then it's difficult to recreate your best team and you struggle a little bit.
"At the moment they’ve got one or two injury problems but nothing that is likely to influence the way they play.
"The front two have been key to their form over the last six games and the whole side were excellent against Huddersfield.
"Like all Championship games, it’ll be difficult and it will probably hinge on fine margins – either a mistake or somebody doing something fantastic."