[caption id="attachment_20589" align="alignnone" width="580"]Rangana Herathpicks up seven wickets for 64. Twitter Rangana Herathpicks up seven wickets for 64. Twitter[/caption] Internet Desk: Rangana Herath, the veteran left-arm spinner, took 7 for 64 as Sri Lanka completed a dominant 163-run win over Australia in the third and final Test on Wednesday, knocking Steve Smith’s men off the top of the ICC Test rankings chart after a 3-0 clean sweep. Australia was set a target of 324 for a consolation win on the final day at Colombo’s Sinhalese Sports Club after Sri Lanka declared its second innings closed at 347 for 8, but crumbled after a bright start to be bowled out before tea for 160. Dilruwan Perera, the off-spinner, picked up two wickets while Moises Henriques was run out as Sri Lanka’s spinners continued to maintain their stranglehold over the Australian batsmen. It was the third successive time that the Australians had lost all three Tests in a series in Asia, following a 4-0 loss to India in 2013 and a 2-0 defeat at the hands of Pakistan in the United Arab Emirates the following year. David Warner and Shaun Marsh, the openers, got Australia off to a brisk beginning in the morning session, but once their partnership was broken, the visitor suffered a rapid collapse. Herath soon took over from his fellow spinner to dismiss Smith and Adam Voges, the senior batsman, in the same over. Smith was bowled off-stump trying to cut a ball too close to his body, while Voges was trapped plumb in front as Australia tottered at 102 for 3. That became 114 for 4 when Warner, having brought up his first half-century of the series, became Perera’s second big scalp of the innings. Having hit six fours and a six in his 68, Warner was bowled behind his legs by a sharp off-break. Herath, who had claimed six wickets in the first innings, then ran through the middle and lower order as the visitors' batsmen had no answer to his left-arm spin. Herath, 38, took the final wicket of Nathan Lyon to trigger wild celebrations in the Sri Lankan camp.