Australia today knocked Pakistan out of the ICC World Twenty20 with a convincing 21-run victory in Mohali. Captain Steven Smith with 61 not out and unbeaten Shane Watson with 44, hammered 74 in the last 38 balls to take Australia to 193 for four. Pakistani batsmen faltered once again to end at 172 for eight. With this win, Australia has set up a virtual quarterfinal against hosts India to be played in Mohali on Sunday that decides the number two team that goes into the semifinals alongside leaders New Zealand. Both India and Australia have 4 points each in Group 2, but Australia has better net run rate of plus 0.44 compared to India's net run rate of minus 0.55.All-rounder James Faulkner starred with ball, becoming the first Australian to take five wickets in the shortest format. Today's second match between South Africa and the West Indies is underway at Nagpur. West Indies won the toss and elected to field. South Africa were 98 for 6 in 16 overs when reports last came in.