The Brumbies coach conceded Australian whistleblower Paul Marks erred in not awarding a penalty try against NSW Waratahs reserve Kurtley Beale six days ago, which would have given the Sharks a win.

SANZAR referees boss Lyndon Bray also admitted it was a wrong decision, yesterday sacking Marks indefinitely from Super 14 duties.

But while the official has been punished, it doesn't help the Sharks.

They arrived in Canberra last night, determined to secure their first win of the Super 14 season.

Friend predicted a fired up Durban outfit would still be reeling from the controversial loss, and for good reason.

''If you give a yellow card under those circumstances, you have to give a penalty try,'' Friend said.

''The Sharks are a team hungry for a win and clearly frustrated from the result last week and the way it happened, with the lack of a penalty try which they obviously expected and deserved."

For more on this story, see the print edition of today's Canberra Times.