Sri Lanka is staring down the barrel at 44-3 after Australia achieved its largest ever total in Asia — 654-6 declared — on day two of the first test in Galle.

Australia's Usman Khawaja struck a maiden double hundred and Josh Inglis got a century on his test debut against Sri Lanka to power the tourists to a mammoth 654 for six before they declared their first innings on day two of the opening test on Thursday.

Sri Lanka 44/3 at stumps on Day 2 of the first Test against Australia in Galle. The Aussies posted a mammoth score of 645/6d after resuming the day on 330/2. Overnight centurions Usman Khawaja and Steve Smith started well before the former reached his maiden double-century.