DHAKA: Opener Shane Watson hammered a record-breaking 185 to help Australia beat Bangladesh by nine wickets in their second one-day international and secure victory in the series on Monday.

His unbeaten innings came off only 96 balls, including 15 boundaries and as many as sixes. It helped give Australia an unassailable 2-0 lead in the three-match series.

Watson broke the world record for most sixes in an ODI innings, set at 12 by West Indies' Xavier Marshall and also broke Matthew Hayden's record of 181 as the highest ODI score by an Australian.

Chasing Bangladesh's 229-7 at the Sher-e-Bangla National Stadium, Watson and former skipper Ricky Ponting took Australia to 232-1 in just 26 overs to secure victory.