Colombo: West Indies sealed a spot in the finals against Sri Lanka with a massive 74 run win against Australia. Gayle starred with a brilliant 41 ball 75 while Pollard was good with both bat and ball.
After setting a massive 206-run target, West Indies bundle out Australia for 131 in the second semifinal of 2012 World Twenty20 to set a summit clash with hosts Sri Lanka on Sunday.
West Indies are in total command as Australia lose more than half the side within 50 runs while trying to chase a massive 206 in the semifinal.
Some exitement by Aussies skipper Bailey came in and scored his first T20I fifty.
Sunil Narine dismissed Matthew Wade to reduce Australia to 43 for 6 in eight overs.
Samuel Badree bowled out David Warner in the first over to give Aussies first blow. Marlon Samuels then got rid of Michael Hussey (18) who was trying to rescue his side from the early setback.
Before Australia could recover from Hussey's dismissal, Badree struck again to send back Shane Watson to leave Australia three down.
Rampaul then joined the party with his double blow. Rampaul dismissed Cameron White and David Hussey in the seventh over to put Australia.
Earlier, Chris Gayle smashed an unbeaten 75 off 41 balls to steer the West Indies to an imposing 205-4.
The swashbuckling left-hander pounded six sixes and five fours after the West Indies elected to bat on what was considered a slow pitch unsuited to aggressive batting at the Premadasa stadium.
All-rounder Dwayne Bravo (37) helped Gayle add 83 for the third wicket from just 51 deliveries as the Australians wilted under lights.
Kieron Pollard hit 38 off 15 balls as the West Indies plundered 55 runs in the final three overs, including 25 off the last six deliveries by left-arm spinner Xavier Doherty.
The winner will qualify to play against hosts Sri Lanka in Sunday's final.
Gayle, who lost his opening partner Johnson Charles in the third over, plodded for nine balls to make four before swinging Shane Watson for a six over long-off.
That opened the floodgates for an onslaught as Marlon Samuels and Gayle smashed Doherty for a six each in one over and Brad Hogg was greeted into the attack with another six from Samuels.
Samuels contributed 26 in a second-wicket stand of 41 with Gayle when he was bowled by fast bowler Pat Cummins attempting another big hit.
Gayle, who faced just 18 balls in the first 10 overs, still managed to bring up his half-century off 29 deliveries with the help of four sixes and three boundaries.
Man of the Match for his 75 from 41 balls is Chris Gayle, the big man came good today for his side, can he do it in the big one on Sunday..
West Indies 205 for 4 (Gayle 75*. Pollard 38*, Bravo 37, Cummins 2-36)
Australia 131 (Bailey 63, Rampaul 3-16)
Result West Indies won by 74 runs
MOM Chris Gayle (West Indies)