Flushed with confidence after their excellent victory over Corfu the day before, the two-girl team of Katie Gouyette and Kirsten McArthur both won their singles to secure overall victory before going down in the doubles.
The 2-1 victory puts them in the semi-final against the No 2 seeds Sardinia today.
Even a defeat would give them a play-off match for bronze.
Gouyette (15) was first up and gained her first singles victory in straight sets although it was a tough 7-5, 6-3 affair.
Going in second, 14-year-old McArthur did exactly what she needed to do, with her ground strokes pulling her through to a 6-3, 6-1 victory over Alexandria Ville.
The Jersey pair, already through to the semi-final, lost the doubles on a championship tiebreak, 10-5, after winning the first set 7-6 and losing the second 6-2.
That was the first half-point dropped by the impressive McArthur, who is now well in the running for an individual medal with two and a half points (one point for a singles win, half for a doubles victory).
It has been noticeable that when coach Rebecca Edwards was on court with the players – she has often had to share her time when the boys’ matches were on simultaneously – the performances improve.
Said Edwards of McArthur’s progress: ‘Kirsten’s been doing well.
She’s currently developing her technique on service, but the rest of her game is good – it was her ground strokes that won her today’s match.
‘I’m delighted the girls have done so well in the event.’ The boys, playing the plate section of the draw after their first day defeat, were in no mood for a repeat and simply swept Cape Verde off the court with singles victories in straight sets.
Charlie Cohen and James Faudemer repeated the medicine in the doubles, winning 6-0, 6-0.