Australia has blasted out a powerful statement of intent for the women's T20 World Cup, dominating South Africa to win their opening match by 65 runs.The Aussies made 8-172 off their 20 overs in Manchester on Sunday morning (AEST), a target that always looked too much for South Africa, who were all out for 107, from 16.4 overs.Georgia Wareham, Australia's player of the match after taking 3-13 and contributing an important batting knock, hailed the Aussie spirit, picking out Phoebe Litchfield, who top-scored with 50, and new captain Sophie Molineux for special accolades."With our batting line-up, you know you can play with confidence and freedom It was certainly too much for the South Africans.The Aussie attack was soon in gear, removing Sune Luus, Annerie Dercksen and Nadine de Klerk in the first seven overs, leaving the South Africans on 48.Australia had dropped De Klerk in the powerplay but Wareham, in addition to her three wickets, also made two important interventions in the field.Having already hit a significant 32, Wareham ran out the dangerous all-rounder Marizanne Kapp for 12 with an accurate throw from the deep and then took a smart low catch at cover to see off the dangerous Laura Wolvaardt for 44.With that, the match was good as won, the South African tail offering little resistance as Australia steamed towards victory.Earlier, Australia had won the toss and made an unconvincing start, losing opener Georgia Voll for a duck to Kapp in the first over