Holtby concedes Rene Meulensteen's side must tighten up at the back but believes they have the quality to survive.
The on-loan Tottenham midfielder said: "We've got the quality to stay up but we need to get some points. We had a fantastic game but have nothing to show for it and that is not what you need when you are fighting against relegation. We need to be solid at the back because we are conceding too many goals and that is a problem.
"We could have had three points but we lost so have to pick ourselves up and be ready for the next game. We have to be mentally strong - that is the key to getting out of the bottom three."
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