broke no sweat

[user_gary]

Defending champions Australia broke no sweat in their Super Eight game against Ireland as they emerged victorious by an emphatic nine wickets at the Kensington Oval in Barbados on Friday.

With the win, skipper Ricky Ponting’s men also sealed their place in the semi-finals of the competition.

Ponting’s decision to field first was backed up by a stupendous bowling.

Please explain the highlighted group of words.

[Anglika]

Australia are defending their position as champions.

They did not need to exert themselves/to work hard to win.