Newcastle skipper Fabricio Coloccini has said the players were angry and frustrated after they twice lost the lead in a 3-2 home defeat to Hull.
Coloccini said he felt the result should provide a wake-up call to the players, warning that this was the sort of game they had to win in order to achieve a top-ten finish.
"There were bad feelings after Hull," the Argentina international told the Evening Chronicle. "Frustration, anger -- everything you'd expect.
"A lot of things happened on the pitch that I'm angry about. We had a great, great chance to take three more points at home against a newly-promoted team. It was a great opportunity.
"If we want to be serious about being in the top ten or look to bigger things, we have to start to take the chances we have. If not, we are going to have problems.
"We do not want to be like we were last season. We ended the season fighting against relegation, and we can't have that again.
Newcastle face Leeds in the Capital One Cup on Wednesday, and the skipper said they had to "get the win and go through".
And manager Alan Pardew has also demanded a reaction, telling The Journal: "Hopefully in the next few games we can right what has been a wrong against Hull.
"But Hull did a great job on us. We have to respect them as much as any other opposition. And Saturday is why -- they can surprise you. They played well, and you have to say that. They did their homework and got the victory.
"I can't say it's a day that I'm going to fondly remember. But the thing that we must improve on is our consistency of performance, as individuals and as a team. That is what got us to finish in fifth place two years ago."