Australia's World Champion Wallaroos swept all before them en route to victory in the Cable & Wireless Hong Kong women's tournament on an opening day of action that also produced wins for all the top men's teams in the Cathay Pacific / Credit Suisse Hong Kong Sevens.

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The Wallaroos, who beat New Zealand to the World title in Dubai earlier this month, won their pool without conceding a single point.

They defeated Tunisia 29-0, Singapore 53-0, Guam 57-0 and Arabian Gulf 30-0 before overcoming World Cup Bowl winners China 24-7 in the final with tries from Rebecca Tavo (2), Cheryl Soon and Debby Hodgkinson. China's fine try came from Yang Hong.

"It's a fairytale, I'm so proud of the way the girls have performed throughout this tournament and we're certainly filling up the trophy cabinet at the ARU," said captain Cheryl Soon.

"We knew China were going to be physical, we knew they would be good at the breakdown and they dominated I thought, we had to get it out to our backs and we did that."

Australia's all-conquering run started last year in Samoa, where the Oceania Sevens title was sealed with a win over New Zealand. The jewel in the crown was certainly the IRB Rugby World Cup Sevens trophy but this Hong Kong title was also special, for the captain in particular.

"I've been here six times and never won it before, we've always been bridesmaids, so to win this here is really special," said Soon.

"In the first half it was tough," added playmaker Bo de la Cruz, "but at the break we discussed what was needed, lifted and came away with the win.

"Our defence earlier in the tournament gave us a fair bit of confidence going into the final and in the end it was a pretty good win."

Test Wallaroo Cassie Bailey made her Sevens debut in Hong Kong, aged 31: "Sevens and 15-a-side could be almost two different sports," she said.v"It is very specialized, especially for fitness."