The All Blacks have batted away the usual cheating claims against their captain Richie McCaw, although halfback Jimmy Cowan admits he can be an infuriating opponent.

New Zealand have become accustomed to such allegations about the champion breakaway surfacing in the Australian media before their Tests against the Wallabies.

This week has been no different with the Daily Telegraph publishing six photos from television footage of the All Blacks' 22-16 win over the Wallabies in Auckland, which it said confirmed him as "a serial offender with a shopping list of illegal plays".

The report claimed footage showed McCaw entering the ruck from the side seven times, and contesting kicks while offside on three occasions, none of which were penalised by South African referee Craig Joubert.

Cowan defended his skipper against cheating claims but offered a touch of sympathy for the Wallabies ahead of Saturday's Tri-Nations and Bledisloe Cup Test at Sydney's ANZ Stadium.

"I wouldn't think so. He probably got hard done by in that last Test match, the referees probably look to that as cheating," Cowan said.

"I don't see it that way - maybe if I was playing for Southland and he was playing for Canterbury I'd be in a different boat - but when he's playing in the same team I don't see too much of it.

"That's what makes him a quality player, you've got to push the boundaries."

Former Wallabies coach Bob Dwyer, never shy about some All Blacks-bashing, called on home coach Robbie Deans - who didn't want to discuss it publicly - to raise McCaw's approach with Saturday's referee Jonathan Kaplan.

But another former Wallabies coach, Eddie Jones, had no concerns about McCaw.

"He's an outstanding flanker who plays the laws to the edge like George Smith, Schalk Burger, Phil Waugh, Heinrich Brussow," Jones said.

Discipline will be a key factor on Saturday night with penalty kicks dominating the All Blacks' and Wallabies' recent defeats to the Springboks.

According to statistics in The Australian, the Wallabies conceded 26 penalties in their two Tri-Nations defeats, and the All Blacks 34 in three tests.

Runaway Tri-Nations leaders the Springboks conceded just 20 penalties in their three wins.

Cowan said the All Blacks were comfortable with Kaplan.

"Definitely, he's a quality referee. He's been around for a while and got a few test matches under his belt. He gets it right most of the time."

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