Australia defeated Pakistan by 21 runs in the World T-20 cricket match played in Mohali today. Opting to bat, Australia scored 193 for 4 in the stipulated 20 overs. In reply, Pakistan could score 172 for 8. For Australia, skipper Steven Smith scored an unbeaten 61 while S.R Watson remained not out on 44. James Faulkner's five wicket haul ensured a smooth victory for Australia. Wahab Riaz and Imad Wasim of Pakistan shared two wickets each while Khalid Latif top scored with 46. This was a vital match for both Australia and Pakistan. Australian victory has now ensured that they do not need to worry about net run rate ahead of their clash with India on Sunday at Mohali. Pakistan now stands eliminated from 2nd semi-final slot of the Wt20 tournament. In today's second match, South Africa will be up against the West Indies in a crucial match at Nagpur. The match begins at 7.30 p.m. This match has been talked up as the fixture that will decide Group I. West Indies hold the aces with two wins from their opening two maches. A third win will see them take control of the group .