BBC Sportrugbyunion

English champions Wasps have made a shocking start to the domestic season and Danny Cipriani and Josh Lewsey had a punch-up in training on Wednesday, prompting coach Shaun Edwards to comment: "We always have a fight in Heineken Cup week."

Leinster are getting sick of playing second fiddle to country cousins Munster and have boosted their firepower up front with the addition of Australia's Rocky Elsom and South Africa prop CJ van der Linde.

But the Dublin-based side have made a shaky start to the season, as have Edinburgh, who have only once reached the knock-out stages but beaten Leinster eight times in nine attempts at Murrayfield.

French sides rarely travel well in the competition and with Castres second-from-bottom of the Top 14, they look set to bring up the rear with Edinburgh.