NEIL Harris was keen to praise David Forde for his role in helping his goalkeeping rival before Saturday's game against Scunthorpe.
The Ireland international was dropped for the crunch fixture after conceding eight goals in the first three league games of the season.
His former understudy Jordan Archer didn't look anything like a rookie making his league debut at Glanford Park, putting in a brilliant performance as the Lions battled to their first clean sheet in eight games.
The former Tottenham man made a number of key saves, and bookended his display by thwarting Paddy Madden from point-blank range in injury-time after denying him in a one-on-one just six minutes in.
Harris said Archer's late intervention to prevent Madden winning the three points for Scunthorpe was his most impressive block, and felt the 22-year-old benefitted from some words of advice from Forde in the lead-up to the game.
"The one he tipped onto the bar in injury-time was a phenomenal save," Harris enthused. "When you play against good teams with attacking purpose you need to throw your bodies on the line to defend.
"But then you also need a good performance from your goalkeeper and he was excellent. He has to do that again and again to be a top goalkeeper.
"I have to give a special mention to David Forde who helped prepare Jordan for the game, mentally and physically, and that showed his character and personality and who he is."
The Millwall boss was also delighted with centre-back Sid Nelson, who went off in the second half after suffering a dead leg in the opening 45 minutes against Mark Robins' side, but who should be fit for Saturday's game at home to Chesterfield.
Harris said: "Sid is a leader. He is a 19-year-old who has captained the side already and he will captain the side in the future.
"He's one of our top young players and he's going to make mistakes at times, but I've got big belief and faith in him and he's going to be a big part of this club in times to come."