Pathum Nissanka scored a maiden ODI century as he paved the way for Sri Lanka's superb six-wicket win over Australia in the third game to go 2-1 up in the five-match series at the R. Premadasa Stadium.

A target of 291 looked daunting but the opener smashed a 147-ball 137 to make the chase look easy as Sri Lanka recorded the highest ODI run-chase against Australia on Sunday night.

Brief scores: Australia 291/6 in 50 overs (Aaron Finch 62, Alex Carey 49, Travis Head 70 not out; Jeffrey Vandersay 3/49) lost to Sri Lanka 292/4 in 48.3 overs (Pathum Nissanka 137, Kusal Mendis 87; Jhye Richardson 2/39) by six wickets