Mitchell Starc claimed five wickets as Sri Lanka was dismissed for 255 runs Tuesday, giving Australia a 137-run win over Sri Lanka in the final session of the first test.
A dogged Sri Lanka had 36 overs to survive after going in to tea at 186-4, but lost its remaining six wickets for just 26 runs as Peter Siddle tore through the middle order before Starc claimed a second-innings 5-63.
Man-of-the-match Siddle mixed up line and length on the cracked Bellerive Oval pitch to remove Angelo Mathews and Thilan Samaraweera within eight overs of the evening session, leaving Starc to take the last four wickets.
Australia's first win in four tests this southern summer gives it a 1-0 lead in the three-match series. Sri Lanka has now lost nine of 11 tests in Australia.