Opener Shane Watson says tired legs inspired the history-making explosion of big-hitting which carried him to Australia's highest individual score in one-day international cricket.

SCORECARD

Watson blasted an unbeaten 185 off 96 balls, as Australia chased down a target of 230 with 24 overs and nine wickets to spare against Bangladesh in Dhaka yesterday.

His 15 sixes were the most by any player in an innings, as was his 150 runs in boundaries, which also included 15 fours. Watson's percentage of his team's score (79.7 per cent) of 1-232 was also the highest by any player in history, surpassing West Indian master blaster Viv Richards (69.48 per cent).