Steve Smith became the 15th member of test cricket's 10,000-run club as he and opener Usman Khawaja smashed hundreds to help Australia rack up 330 for two on the opening day of the first test against Sri Lanka in Galle on Wednesday.

Stand-in captain Steven Smith scored his 10,000th Test run before completing the momentous occasion with a majestic century, while Usman Khawaja reached his 16th ton as Australia were rewarded for an aggressive approach against a spin-heavy Sri Lanka attack on a slow Galle surface.

Steve Smith has become the 15th player in Test cricket, and fourth Australian, to score 10,000 runs in a career. Needing just one run, Smith brought up the milestone on his first delivery, skipping down the wicket and punching a single to mid-on, on the opening day of Australia's first Test against Sri Lanka in Galle.