Dinesh Chandimal has scored an unbeaten 63 as Sri Lanka struggled to 136-5 at lunch on Day 3 in reply to Australia's imposing first innings of 654 in the first cricket test.

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.

Australia had Sri Lanka three down after opener Usman Khawaja’s first double century and a ton on debut by Josh Inglis helped the tourists to 654-6 declared in the first match on Thursday. Sri Lanka were 44-3 by stumps on day two at Galle with senior batsmen Dinesh Chandimal,

Australia’s batters have feasted on Sri Lanka’s bowling, racking up milestones and dominance on a rain-curtailed opening day of the first test in Galle.

It was a debut three years in the making but Josh Inglis made it one to remember with a thrilling century against Sri Lanka to give Australia another selection headache in the lead-up to the World Test Championship.