David Warner’s record-breaking 173 off 136 balls for Australia proved in vain as South Africa completed a series whitewash with a 31-run win in the fifth and final ODI at Newlands.Warner made the highest score in an ODI at the Cape Town venue but could not drag the tourists up to South Africa’s 327-8, which featured 122 by Rilee Rossouw.South Africa duly became the first team to defeat Australia in every game of a five-match one-day series. Rossouw and fellow left-hander JP Duminy (73) transformed the South African innings with a fourth-wicket partnership of 178 off 170 after the hosts slipped to 52-3.Rossouw hit the ball with great power in making his runs off 118 balls with 14 fours and two sixes, while Duminy was the ideal partner with a combination of silky stroke play and good running between the wickets.South Africa’s total was the third-highest recorded in a one-day international at Newlands and although Warner, after an early reprieve behind the wicket, countered with his second ton of the series, he lacked sufficient support.Imran Tahir (2-42) put the skids under Australia with two wickets in three balls after Warner and Aaron Finch had put on 72 for the first wicket.The spinner - who had several verbal spats with Warner during the chase - bowled Finch and Steve Smith in quick succession before George Bailey dragged on for two.Mitchell Marsh (35) and Travis Head (35) offered Warner - the only batsmen in world cricket to score over 1,000 ODI runs in 2016 so far - solid support before the opener went on to post his 150 off 125 balls.The left-hander posted the highest score by an Australian against South Africa in an ODI when he eclipsed Ricky Ponting’s 164, made in Johannesburg in 2006, but fell in the 48th over when he was run out attempting an unlikely second.Source: Sky Sports