Joel Ward has called on his teammates to "come off the ropes swinging" after the "extremely frustrating" defeat at home to Sunderland on Saturday evening.
Four goals - three inside six minutes - sunk the Eagles before the half time whistle, in a game where they dominated possession and the number of attempts on goal.
"It's extremely frustrating," Ward reflected. "First half I think they out-worked us and we let them play, let them pick up the ball in dangerous areas and didn't cope with what they threw at us and that's unacceptable.
"We wanted to come in to the game with the momentum from Bournemouth the other night, but we didn't do that and by the time we did it was too late.
"If you get the first goal it's a massive boost for the side, but we didn't get it. Then we made it too easy for them to get their noses in front and gifted them too many goals.
"We have to get together, dust ourselves off, roll up our sleeves and go, if we don't do that we're going to be in very big trouble. We need to come off the ropes swinging - and that's just the start of it."