South Africa have to shut down two high speed Japanese 'Ferraris' if they are to prevail in the World Cup quarter-final on Sunday, according to Springboks assistant coach Mzwandile Stick.

France centre Sofiane Guitoune says the most important aspect of their preparation for Sunday's World Cup quarter-final against Wales has been learning how to stop themselves "acting like idiots" when they are in positions of dominance.

An often maligned pack has so far gained most of the plaudits for an under-par Australia in the Rugby World Cup, and scrumhalf Nic White feels if the backs can raise their game to the forwards' level, England has better watch out.

Ireland would have to just move on and prepare for their World Cup quarter-final against New Zealand without centre Bundee Aki even if they still may appeal his three-match ban, forwards coach Simon Easterby said on Tuesday.

Former All Blacks scrumhalf Justin Marshall screamed "what a pass" in his television commentary, while New Zealand and Irish media credited it with sparking "The Great Escape".

England have rubbished suggestions that a two-week break before their World Cup quarter-final against Australia has left them undercooked, with coaches having to step in to cool things down at a white-hot training session on Tuesday.

Flyhalf Dan Biggar and centre Jonathan Davies, two of Wales' most important players, are back in training and should be available for Sunday's World Cup quarter-final against France, assistant coach Stephen Jones said on Tuesday.

Tonga hooker Paula Ngauamo has been banned for seven weeks for kicking an opponent in the head during his team's 31-19 win over the United States in their final Pool C match at the Rugby World Cup.

World Rugby chief Brett Gosper said there would be no change to the hard line on high tackles at the Rugby World Cup and that the number of red cards would decrease once players changed their behaviour.

The Scottish Rugby Union have been referred to a disputes committee over their comments about the potential cancellation of their World Cup clash against Japan, organisers said on Tuesday.