Pompey Women were left frustrated by Cardiff, as they were held to a goalless draw for the second match in succession.
They twice came close to snatching a winner in the second half at Cams Alders, with efforts from Emma Jones and Cherelle Khassal hitting the woodwork.
Jay Sadler made a couple of changes from the side that played out a stalemate with Gillingham the previous week.
Khassal and Annie Rolf both came into the starting line-up, with Danielle Rowe and Jaime Gotch dropping to the bench.
After a slow start, Emma Jones cut inside from the wing and fired in a shot that was held by Estelle Randall.
Khassal then sent a dangerous delivery towards fellow forward Shannon Albuery inside the box, but the visitors managed to hack clear.
There was little else of note to occur in the opening stages, though, with both sides struggling to carve out any clear-cut chances.
The best chance of the half came right before the whistle blew, as Dani Lane pulled the ball back for Albuery to fire narrowly past the post.
Half Time: Pompey 0 Cardiff 0
It was a similar story when the action restarted, with both goalkeepers enjoying a relatively comfortable afternoon.
But Emma Jones livened things up on the hour mark, collecting an inch-perfect pass from Rolf and sending in a shot that was parried clear by Randall.
She then remained alert to pick up the loose ball and have another attempt that cannoned back off the crossbar.
And the woodwork was left rattling again just a few minutes later, this time courtesy of a volleyed Khassal effort.
Cardiff were not providing Hannah Haughton with much to be concerned about, although a couple of free-kicks were not too far off target.
Sadler used all five of his substitutions in an attempt to add some fresh attacking energy into his side.
And they almost grabbed a winner when a cross from de Bunsen drifted towards the net and had to be turned over by Randall.
But the Blues could not turn that late pressure into a goal and had to be content with a share of the spoils.
Pompey: Haughton (c); Bridge (Rowe 70), Younger, Gane, Quayle (McDonnell 70); Rolf (de Bunsen 61), F.Jones (Gotch 77), Lane; E.Jones; Khassal, Albuery (Harney 77)