scores of 110, 98 and 10, as well as being the top run-scorer in the three-Test series against South Africa in Australia. Clarke won the 2009 Allan Border Medal in a tie with Ricky Ponting both scoring 41 points, and was named Test Cricketer of the Year. For his performances in 2009, he was named in the World Test XI by the ICC. Captaincy On 5 December 2007, Cricket Australia named Clarke as captain of Australia for their one-off Twenty20 game against New Zealand in Perth, after deciding to rest Ponting and Hayden. Clarke was named as captain of Australia's Twenty20 side in October 2009, taking over from Ricky Ponting, who retired from Twenty20 International cricket to prolong his career. In January 2011, Clarke was named as stand-in captain for the fifth Test of the 2010–11 Ashes Series at the SCG, replacing the injured Ricky Ponting. He announced his retirement from Twenty20 International cricket on 7 January 2011, to concentrate on the longer forms of the game. When Ponting stood down from the captaincy of the Australian Test and ODI sides after the 2011 World Cup, Clarke was appointed as his permanent replacement in both roles. His knock of 151 against South Africa at Cape Town was nominated to be one of the best Test batting performance of the year 2011 by ESPNCricinfo. In January 2012, in the second Test of Australia's home series against India and after a string of Test centuries since becoming captain, Clarke became the first Australian batsman since Matthew Hayden in 2003 to score a triple hundred. He joined with Ricky Ponting (134) in a partnership of 288, then added 334 with Michael Hussey (150*) before declaring on 329*, having started his innings with the score at 37/3. This match against India was the 100th Test to be played at the Sydney Cricket Ground, and Clarke's score was both the highest ever made in an Australia-India Test (surpassing V. V. S. Laxman's 281 from the 2000/01 season) and the highest ever achieved at the ground. The ground high score record had been held for more than a century by Englishman Reg "Tip" Foster's 287 scored in the 1903/04 season. Clarke led Australia to a 4–0 win and was named the player of the series, having scored 626 runs at an average of 125.20. His knock was nominated to be one of the best Test batting