Jason Pearce offered no excuses after Pompey’s desperately poor Ricoh Arena performance.
The Blues slumped to a 2-0 defeat in the crucial relegation tussle with Coventry City.
It was a disappointing display with the hosts running out deserved winners.
Michael Appleton’s men are now five points adrift of the Sky Blues and six points short of safety.
The Blues boss was furious with his players following Saturday’s result.
Effectively, it was back to square one having failed to build on the excellent 4-1 hammering of Birmingham in the week.
And skipper Pearce also pulled no punches in his frank assessment of the clash with their fellow strugglers.
He said: ‘Obviously we’re massively disappointed.
‘It was a big chance for us to build on the Birmingham victory but it didn’t work out.
‘Coventry had three decent chances in the whole game and scored from two of them.
‘Both of the goals we conceded were poor and it’s just so frustrating.
‘We hit the post at 1-0 and if that had gone in, it could have been different.
‘But at the end of the day we weren’t good enough.
‘Everyone’s got to look at themselves in the mirror and reflect on that performance.
‘There are no excuses and the gaffer has told us to analyse our performances and move on quickly.
‘We’ve got eight games left now to try to get out of the mess we find ourselves in.’
Pompey’s players have the opportunity to swiftly make amends.
They face play-off contenders Hull City at Fratton Park tomorrow night.
It represents one of eight games left to stay in the Championship.
Time is ticking down and Pearce is fully aware the Blues cannot afford another below-par performance against the Tigers.
He added: ‘We’ve got a game tomorrow and luckily we’re at home.
‘We’ll need the fans behind us as they always are.
‘Now we need to get a good result and give them something to cheer about.
‘They deserve that.’