Australia and Sri Lanka clash in the third and deciding final of the tri-nation cricket series at the Adelaide tomorrow. Both the teams are evenly placed from the earlier two finals played on Sunday and yesterday. Australia will go without its skipper Michael Clarke due to his serious left hamstring injury. He is likely to be rested for about a month. In his absence, Shane Watson, presently Vice Captain is certain to lead the team. The Australian team leaves for a long tour of the West Indies on Friday.