But Chopper bemoans set-piece failings after Derby drawNeil Harris was full of praise for hat-trick hero Lee Gregory - but couldn't hide his disappointment as Millwall let a two-goal lead slip in Saturday's 3-3 draw with Derby County at The Den.
Gregory opened the scoring during the first-half before adding a second from the spot, but Tom Ince's free-kick halved the deficit shortly before the interval.
Lions striker Lee completed his treble from the spot in 56th minute but Chris Martin, with a penalty of his own, and Jeff Hendrick, with a superb volley, both scored to secure a point for the visitors.
Failure to hold on to the lead meant Millwall missed the chance to climb out of the drop zone and means that a Rotherham win over Reading on Tuesday night would see The Lions relegated to League One.
"If you score three goals at home then you expect to be on the winning side," Harris said.
"That is a big disappointment for us. We had enough senior professionals out there to see the game out.
"The players, as a group, have built hope and belief. They will have to pick themselves up on Monday morning.
"It's out of our hands, as it has been for a long while. We just have to hope that Reading do us a favour so that we have a chance on the final day."
Despite the result Harris was delighted for Gregory, whose hat-trick was his first in professional League football.
"He has scored two penalties because he practises 10 in training every day. That is what you need to be a top player.
"Lee has been a bit unlucky this year and in another season, I'm sure, he would have hit 16 or 17 goals at least.
"He will score 20 goals for us next year, I've no doubt about that."