CHRISTCHURCH, New Zealand: Steve Smith’s dominant Australians crushed New Zealand by seven wickets in the second Test to sweep the series 2-0 and go to the top of the world rankings in Christchurch on Wednesday. With Smith smacking 53 off 46 balls, Australia polished off the 131 runs they needed on the final day at Hagley Oval to reach their 201 target in the fourth over after lunch. Adam Voges was not out 10 while the only wickets to fall on the final day were those of Joe Burns for 65 and Usman Khawaja for 45. The victory confirmed Australia’s superiority over New Zealand after they won the first Test in Wellington by an innings and 52 runs. For New Zealand it put a cloud on Brendon McCullum’s farewell, as their captain took his final bow on the world stage after 101 Tests.