Ajantha Mendis became the first bowler to bag six wickets in a Twenty20 international as Sri Lanka clinched the series 2-0 against Australia with an eight-run win in the second match Monday.

The unorthodox spinner finished with 6-16 off four overs as Australia lost their way after an explosive start provided by Shane Watson, who hammered a 24-ball 57 with five sixes and six fours.