DANNY Shittu described Millwall's 5-1 defeat to Derby County as a low point in his career – but says the Lions cannot afford to let their heads drop.
Millwall have now lost four of their opening six league games this season and have not won a Saturday home game in the Championship since December 15, 2012 – nine months ago.
They host table-topping Blackpool at The Den tomorrow with boss Steve Lomas desperately needing a win to relieve the mounting pressure on him after a nightmare start to his tenure.
Shittu said: "Those are the kind of games that are one of your lowest times in football. No team likes to lose, no player likes to lose, but to lose in the way we did, by that scoreline, was very disappointing.
"As defenders, we get paid to keep clean sheets, so I was obviously disappointed with my own performance and to let in that many goals. Every other player in the changing room feels the same way.
"We had played really well in the last couple of games, so we came into this one feeling confident. We'd been working hard for the last two weeks and we thought we could do really well, so for it to be the complete opposite…the players are really shocked.
"All of the players are gutted. There isn't one player or staff member who went away on Saturday not bothered by the result. This affects every single one of us. Every team has their bad day at the office, and this was ours."
Shittu felt Jake Buxton had committed a foul in the build up to the Rams' opening goal, and also disagreed with referee Keith Stroud's decision to send off Shane Lowry.
"We didn't think the ref would give the first goal," Shittu said. "He [Buxton] was climbing on my back and had his hands all over me. We spoke to the ref and didn't think he was going to give it.
"We did not think it was a red card either. Shane won the ball and had his leg straight the whole time – the ref said it was malicious and that he was trying to kick him [Will Hughes].
"Shane makes those tackles all the time, and if he caught him it should have been a yellow."
Shittu says it is imperative Millwall remain upbeat with the visit of Paul Ince's Tangerines to SE16 right around the corner.
"We are professionals and we have got a lot of experience in the squad, so we either sink or swim now," he said. "We have to pick ourselves up and learn from our mistakes.
"It is a good thing we have got a game tomorrow. We have to stay positive because if our heads go down now, that is not going to help us. We will talk about it and look forward to Blackpool. We know that we can play well.
"Blackpool are a good side, they place nice football and score goals, but all that matters is what we do. We need to pick up points and the players know that has to start on Tuesday."