Pompey were forced to settle for more Fratton Park frustration as they were held to a 0-0 draw at home to Yeovil Town.
After the midweek defeat to Exeter, the Blues were unable to find the perfect response to break down a Yeovil side who defended valiantly throughout.
It was a lacklustre first-half showing from Pompey as they struggled to create clear-cut openings against a resolute Glovers defence.
Gareth Evans saw two efforts blocked, while Michael Doyle’s volley flashed wide – but that was the sum total of efforts on goal, despite Pompey dominating possession.
In reality, it was Yeovil who had the two real chances of the first half as the returning Ryan Bird saw his header from a corner tipped away by Aaron McCarey.
Stephen Arthurworrey also should have scored with a glaring opportunity as he failed to make contact with a free-kick when he was left totally unmarked eight yards out.
Boss Paul Cook made a tactical switch at the break, as he replaced Evans with Jayden Stockley to partner Matt Tubbs up front in a revised 4-4-2 formation.
But the clear chances still failed to materialise, with Gary Roberts going closest with a drive over the crossbar after great work from Kyle Bennett.
Pompey continued in vain to break the visitors down and were almost camped exclusively in the Yeovil half as the game wore on.
But the visiting keeper, Artur Krysiak, was only really tested in the final 10 minutes when Michael Doyle’s crunching 30-yard effort was pushed away.
And that will be a concern to Cook, whose side have not fired on all cylinders in League Two on home turf since the opening day of the season.
It still remains a positive start to the season for Pompey and the team is probably ahead of expectations at this stage.
But it’s still a disappointing result against a side struggling near the bottom of the division.