Australia selected two spinners but it was the quicker bowlers who made the difference with the outstanding McKay (5-28), Brett Lee (3-29) and stand-in skipper Shane Watson (2-13) all contributing as they dismissed Sri Lanka for 215 with six balls remaining.
Australia will now retain the number one ranking in the one-day international championship for a third successive year unless they lose all five matches on their upcoming tour of West Indies.
Image: Australia's players celebrate the series victory over Sri Lanka at the end of the One Day International series cricket match in Adelaide, Australia, Thursday, March 8, 2012.
Text: Reuters
Images: AP