Rugby sevens: New Zealand sides advance to World Cup semis

Sarah Hirini dive passes to Kelly Brazier of New Zealand during the quarter-final win over Ireland. Photosport

New Zealand is still a chance for a double at the Rugby Sevens World Cup once again with both the Black Ferns Sevens and All Blacks Sevens easing into tonight's semifinals in South Africa.

The Black Ferns Sevens, aiming for a third straight title, will play France for a spot in the final at 10.07pm after a 28-0 quarter-final victory over Ireland this morning.

Ireland proved a tough side to crack in the first half with Niall Williams the only player to cross as New Zealand took a 7-0 lead at the break.

But a Portia Woodman long-range try to start the half, her 20th try at the World Cup, opened the floodgates as missed tackles began to cost the Irish.

Alena Saili locked in the semifinal spot with New Zealand's third try on the 11 minute mark before Shiray Kaka crossed over for New Zealand's fourth try right on the whistle. Risi Pouri-Lane and Tenika Willison were perfect with all four conversions.

Australia play USA in the other women's semifinal.

The All Blacks Sevens, also looking for a third straight title, will face Ireland in the semifinals at 10.35pm after a tight 12-5 quarter-final victory over Argentina.

Down 5-0 early, a converted Scott Curry try gave the All Blacks Sevens the halftime lead just before the break.

Moses Leo scored what proved to be the match-winner midway through the second half after pouncing on a loose ball and running 80 metres to cross the line.

There was an awkward moment late in the match when Australian referee Jordan Way was replaced after accidentally clashing heads with a charging Argentine player and New Zealand's Sam Dickson.

Ireland shocked hosts South Africa in the quarter-finals with three second half tries to win 24-14 and reach the semifinals for the first time.

In the other men's semifinal, Australia will face while Fiji.