India completed a total whitewash of the three match T-20 series against Australia, defeating the hosts by seven wickets in the third and final Twenty20 match to win the series 3-0 today in Sydney. India surpassed the target of 198 by making 200 for three in their 20 overs. Rohit Sharma was the top scorer with 52, while Virat Kohli made 50. Suresh Raina remained unbeaten on 49 and Yuvraj Singh on 15. Needing two runs off the last ball, Raina hit the winning shot for a boundary.Earlier, Australia's stand-in captain Shane Watson won the toss and decided to bat first. Watson pulverised a mediocre Indian bowling to smash an unbeaten 124 as Australia scored a commendable 197 for five in 20 overs. The seasoned all-rounder played only 71 balls hitting 10 fours and half a dozen of sixes carrying his bat through the innings.India went into the match with an unchanged team. Australia, on the other hand, made five changes. Usman Khawaja came in for injured regular skipper AaronFinch, while Cameron Bancroft replaced Matthew Wade. Travis Head was roped in to replace James Faulkner, while Cameron Boyce was brought in for Nathan Lyon. Pacer Shaun Tait was included in place of John Hastings.