Australian Men's Sevens interim coach Scott Bowen has selected three debutants in his 12-man squad for the opening round of the 2015-16 HSBC World Rugby Sevens Series. Wallaby Henry Speight will earn his first national Sevens cap with lightning 24-year-old back Tom Kingston and rugged Stephan van der Walt also set to make their World Series debuts. Ed Jenkins will captain the side, while star centre Cameron Clark needs just 30 points to overtake Peter Miller and become Australia's all-time leading points scorer in the history of the Sevens World Series. Pat McCutcheon (hamstring) and Nick Malouf (knee) are unavailable for the Dubai Sevens due to injury. Australia head to Dubai on the back of some fine form having won the Central Coast Sevens last month and the Oceania Regional Olympic Qualifier in Auckland a fortnight ago. Last December, the Aussies finished tournament runners-up in Dubai after falling to a red-hot South Africa in the Cup Final. Scott Bowen said: "Everyone is exc