A second half strike from Katie James was enough to secure all three points for Pompey Ladies at QPR.
There was one change from the side that cruised into the semi-finals of the Hampshire Cup the previous week, as Shannon Albuery replaced Daisy McLachlan wide on the left.
And she had the first chance to break the deadlock, firing into the side netting after collecting a pass from Ellie Kirby.
But clear-cut chances were proving to be at a premium during a first half that took time to really get going.
Robyn Levett made a good save to deny Katie Knell, while Albuery sent a shot narrowly wide at the other end.
The action improved after the break and Albuery was inches away from connecting with Rachel Panting’s cross, before Lauren Dolbear came tearing from her line to deny Sammy Quayle.
And the breakthrough finally arrived on 75 minutes, as James made herself space in the box and drilled the ball into the bottom corner.
The visitors tried to increase their lead, with Molly Clarke and Panting both firing narrowly off target, while the former also struck the crossbar late on.
Blues boss Jay Sadler told the club’s official YouTube channel: “It was a solid performance and the girls were very professional.
“We always knew what QPR’s game-plan would be. They sat back in two banks to try to nullify the space and so we just had to go at them to find the pockets.
"Katie was superb and a worthy scorer. She deserves the plaudits."
“In the first half we didn’t really circulate the ball with enough intensity and purpose as we should have done.
“But we came out after the break and improved on that, getting a well-deserved goal. The clean sheet was also good, although they didn’t really test us.
“Robyn made a couple of decent saves, but that was the only threat that QPR provided and we never looked like conceding.
“It was very solid from us and we had the ball for a large majority of the game, so it would have been disappointing had one gone in.
“The three substitutes gave us a bit more energy in the final third when they came on, while Katie was superb and a worthy scorer. She deserves the plaudits.
“We’ve got a competitive squad here at Pompey and everyone’s ready to kick on following two positive results.”
Pompey: Levett; Kirby, Southgate, Currie, Geer; Perkins (Clark 58); Panting, James, Sievwright (Boswell 78), Albuery (McLachlan 65); Quayle
Sub not used: Peck