Australia will take on Sri Lanka in the second match of the best-of-three finals of the cricket tri-series in Adelaide today.The hosts took a giant step towards winning Commonwealth Bank trophy when they defeated Sri Lanka by 15 runs in the high-scoring and thrilling first final of the tri-series at Brisbane on Sunday.Even though,Australians are 1-0 up in the three-game final, home team will require a more disciplined performancefrom its bowlers who cut a sorry figure on Sunday against the Sri Lankan lower-middle order and tail-enders