Perth - Sri Lankan captain Mahela Jayawardene won the toss and chose to field against Australia in the third tri-series one-day international at Perth's WACA ground on Friday.
The home side named an unchanged side after beating India in the rain-shortened series opener in Melbourne on Sunday.
Sri Lanka made one change from the side beaten by four wickets by India in Perth on Wednesday, promoting spinner Sachithra Senanayake.
Australia named Peter Forrest as 12th man, while Thisara Perera will carry the drinks for Sri Lanka.
Australia - David Warner, Matthew Wade, Ricky Ponting, Michael Clarke (capt), Mike Hussey, David Hussey, Dan Christian, Ryan Harris, Mitchell Starc, Clint McKay, Xavier Doherty. Peter Forrest (12th man)
Sri Lanka - Tillakaratne Dilshan, Upul Tharanga, Kumar Sangakkara, Mahela Jayawardene (capt), Dinesh Chandimal, Angelo Mathews, Nuwan Kulasekara, Lasith Malinga, Dhammika Prasad, Lahiru Thirimanne, Sachithra Senanayake. Thisara Perera (12th man)
Umpires: Nigel Llong (ENG), Bruce Oxenford (AUS)
TV umpire: Paul Reiffel (AUS)
Match referee: Andy Pycroft (ZIM)