Brett Lee claimed the first hat-trick in the shortest version of cricket as Australia thrashed Bangladesh by nine wickets in a Super 8s game of the Twenty20 World Cup at Newlands here today.After restricting Bangladesh to 123 for nine, the Aussies cruised to victory with 6.1 overs to spare. Known for their big hitting skills, the opening pair of Matthew Hayden and Adam Gilchrist plundered the rival bowlers all over the park to put on a century partnership.Hayden toyed with the Bangladesh attack to notch up an unbeaten 48-ball 73, including nine fours and three sixes, while Gilchrist made a 28-ball 43 before getting out.scoreboardBangladesh: T Iqbal c Ponting b Clark 32, Nazimuddin c Ponting b Johnson 11, A Ahmed c Hodge b Bracken 31, Mohd Ashraful c Symonds b Clarke 7, Shakib c Gilchrist b Lee 16, M Mortaza b Lee 0, A Kapali lbw Lee 0, F Reza c Hussey b Bracken 4, M Rahim not out 3, A Razzak not out 0, Extras: (b1, lb2, nb5, w11): 19, Total: (for 8 wkts, 20 overs) 123Fall of wickets: 1-40, 2-65, 3-82, 4-108, 5-108, 6-108, 7-120, 8-120Bowling: Lee 4-0-27-3, Bracken 3-0-14-2, Clark 4-0-13-1, Johnson 4-0-28-1, Symonds 2-0-10-0, Clarke 3-0-28-1.Australia: A Gilchrist run out 43, M Hayden not out 73, R Ponting not out 6; Extras: (nb1, w1) 2; Total: (for 1 wkt, 13.5 overs) 124Fall of wicket: 1-104Bowling: Mashrafe Mortaza 3.5-0-27-0, Syed Rasel 2-0-25-0, Abdur Razzak 4-0-34-0, Shakib al Hasan 2-0-15-0, Alok Kapali 2-0-23-0.