A 69-run stand for second wicket between Nissanka (40) and Silva (26) kept Lankans in a good position but the Aussies made comeback with some quick wickets, exploiting Lankans' tendency to hit loose shots
Cameron Green, 23, joins the squad after making an impression at the top of the order during Australia's T20I series in India last month, providing him an opportunity to continue his remarkable recent ascent in international cricket.
The pacer becomes the first fast bowler to lead the Australian side in the 50-over format and only the second bowler after the late Shane Warne who led the team in the ODI's for 11 games in the nineties.
Skipper Aaron Finch has suggested that his stay at number four could be a short one despite him playing a match-winning knock in a thrilling first T20I against West Indies on Wednesday
A half-century from Aaron Finch and his 69-run partnership with wicketkeeper-batter Matthew Wade helped Australia clinch a thrilling three-wicket win over West Indies in the first T20I of two-match series in Carrara on Wednesday
The series will kick off from September 20 onwards in Mohali. It will be followed by the second T20I in Nagpur on September 23 and the third T20I in Hyderabad on September 25
Led by Pat Cummins, a United Nations International Children's Emergency Fund (UNICEF) Australia ambassador, the team will donate $45,000 to the organisation's Sri Lanka appeal.
All-rounder Cameron Green played a crucial knock of 77, helping the Aussies gain a 109-run lead after Sri Lanka were dismissed for 212 in first innings.