Australia beat Sri Lanka by 15 runs in the first of the best of three finals in the cricket tri-series on Sunday. Brief Scores: Australia: 321 for 6 in 50 overs (David Warner 163, Matthew Wade 64; Dhammika Prasad 2/51). Sri Lanka: 306 all out in 49.2 overs. (Nuwan Kulasekara 73, Upul Tharanga 60; David Hussey 4/43, Shane Watson 3/33).