Ole Gunnar Solskjaer insists Cardiff City cannot afford to lose their next match against relegation rivals West Brom.
Cardiff remain three points adrift of West Brom after every side in the bottom five lost at the weekend in the battle to stay up.
Solskajer takes Cardiff to West Brom this weekend in a real relegation six-pointer and the Norwegian accepts defeat is not an option for his side if they want to avoid the drop.
"Liverpool was a bonus game, no-one except ourselves believed we could get anything out of it. But the game against West Brom is not negotiable. It is vital, you can't lose that one," said Solskjaer.
"The teams around us are not winning either. I don't know if it is going to require four more wins (to stay up). I actually think it might be less.
"We've got seven games to get four more points than the two teams in front of us and we are definitely running out of time.
"But we've had momentum in performances, effort and attitude. We need points, so why not start at West Brom?"
Meanwhile, Cardiff striker Fraizer Campbell believes that the fight to stay up will go right down to the wire.
Campbell, who scored in their 6-3 defeat to Liverpool on Saturday, believes they can take positives from the game against Liverpool for the last seven matches of the season.
"We are in a dogfight for survival and we are up for the challenge," Campbell told Wales Online.
"This will go to the wire and we know what we have to do.
"Over our last four matches we have played really well as a team. Nobody expected us to get anything against Liverpool, but we showed the spirit needed to climb the table."