Pompey tumbled to a miserable 3-2 loss at home to Accrington Stanley as the gloom descended on Fratton Park.
A crazy first half saw Pompey fight back from 2-0 down and survive a missed penalty as the game reached the break at 2-2.
Accrington raced into a shock two-goal lead when Rob Atkinson drove home from close range after Pompey failed to clear their lines from a free-kick on 11 minutes.
And the visitors doubled their lead four minutes later as John O’Sullivan rifled a low shot into the bottom corner from the edge of the penalty area.
That prompted a smattering of disgruntled boos from the Fratton faithful but the Blues gave themselves a lifeline when Marcus Bean curled home a delightful finish from 20 yards.
Pompey then got back on level terms when Craig Westcarr raced through on goal and produced a classy lob to restore parity just beyond the half hour mark.
There was still more drama to come when Matt Fish was adjudged to have fouled O’Sullivan in the area, which sparked fury at the referee from fans and players.
But Accrington were unable to take advantage as Paul Jones made a superb low save to his right to deny Luke Joyce.
The second period was rather more sedate and Pompey should have taken the lead when Bean saw a piledrive somehow kept out by Jack Rose.
But they failed to create a really clear opportunity after that and were undone 12 minutes from time.
Ben Chorley lost possession on the halfway line but Accrington broke quickly and Piero Mingoia cut in from the left flank and fired the winner.
Boos were heard at the final whistle before Fratton Park descended into silence as the dejected players trooped off.