Aurelien Rougerie believes defence will win the day when his table topping Top 14 ASM Clermont Auvergne team go into their must-win clash with the Ospreys at Stade Marcel Michelin on Saturday.
With the Ospreys unbeaten and four points clear at the top of Pool 3, French star wing Rougerie accepts a third defeat would be a major setback - although they go into the contest boosted by a 16-15 victory at Toulouse at the weekend that earned them the leadership of the Top 14 table.
"We know we are in for a big clash and that the game is vital if we want to qualify for the quarter-finals," he said. "If we lose at home against the Ospreys that will be it, we will be out. There is no room for error, we can't afford to lose.
"I think defence will be a key point for both sides and in Round 2 we had a taste of just what tough and fierce opponents the Ospreys are. They are a complete side with powerful and mobile players up front and a fast backline who enjoy playing out wide - they are good at piercing defences and scoring tries.
"The game in October finished with a really tight score to them of 25-24. We were too slow starting and they put a lot of pressure on us, they smothered us and we couldn't impose our game in the first half.
"We managed to get back but it was a really tough match. They have so many quality players and also plenty of international experience.
"As for their backs and looking at how they play, Barry Davies, Nikki Walker and Tommy Bowe must spend a lot of time training on support, especially Davies as he is a bit more powerful than when he was with Brive.
"They also have very good handling skills and are really keen to get their hands on the ball. All this talent and the hard work they put in is proof the team is serious about the job.
"We have a lot of talented players and we also like to run the ball. In the games against Leicester, it was a real treat because we got to express ourselves on the field. It did us a lot of good and allowed us to play this Heineken Cup
campaign on a better note.
"It will only be when each player takes more individual responsibility that we will progress as a group and be able to go further in this tournament.
"I was rested for last weekend's Top 14 16-15 win at Toulouse due to long-lasting minor glitches and to avoid any potential complications. The staff wanted to have a turnover in the squad anyway so it was ideal for me to have a break.
"We are already suffering from the absences of Jason White and Julien Bardy who sustained tibia and fibula fractures respectively so we did not really start the new year on the right foot and let us hope the number of long-term injured players will not increase otherwise we will struggle to finish the second part of the season."
Clermont have not qualified for the Heineken Cup knock-out stages since the 2001/02 season but they are double European champions after winning the Amlin Challenge Cup tournaments in 1999 and 2007.
"So far my best memory in Europe remains our victory in the 2007 Challenge Cup final against Bath," said Rougerie.
"That was a great moment because although we generally do well each season in our domestic championship, we had been struggling for a number of years to win any silverware and that trophy was most welcome. We have been surfing on that good vibe ever since and we always try to find our inspiration from that experience to keep a positive spirit."
The British & Irish Cup kicks off this weekend with the four Regional Premiership Select XVs flying the flag for Wales. Welsh
Sat 14 Nov: Blues Premiership Select v Nottingham (2.30) & Connacht Eagles v Dragons (2.30)
Sun 15 Nov: Yorkshire Carnegie v Ospreys Premiership Select (1.30) & Scarlets v Bedford Blues (3.00)
The Welsh Rugby Union is forming a new Youth Board with a brief to help keep more young people involved in the game during their late teenage years and beyond. The first task of the fifteen strong Board will be to analyse and consider the issues which lead to a number of youngsters drifting away from the sport between the ages of 16 and 21. To apply visit www.wru.wales/youthboard
The Foster's Challenge Cup will involve the 12 Principality Premiership sides and will run during European and British & Irish Cup weeks, providing vital fixtures for the participating clubs and an opportunity for upcoming players to step up to semi-professional rugby and make a claim for starting places within the Premiership squads.
Eighty schools and colleges in Wales now have a full time rugby officer as part of the WRU's school club hub scheme. All of the school club hub officers recently gathered at the National Centre of Excellence for various workshops.
With Liam Williams forced out of the World Cup through injury, lock Luke Charteris and Skills Coach Neil Jenkins say they have to put yesterday's defeat behind them as Wales now look ahead to another physical encounter against South Africa in the quarter-finals of the Rugby World Cup.
WRU Consultant Head of Physical Performance Paul Stridgeon praises the Physical Performance department for their work and dedication as he addresses the media ahead of Wales' Pool A clash against Australia
Twelve young people have been selected to follow a one year WRU Coach Core apprenticeship programme. Coach Core was set up by the Royal Foundation of the Duke and Duchess of Cambridge and Prince Harry as part of the Olympics legacy in 2012 and the Duke of Cambridge was on hand to meet the apprentices on their first day in the job. The programme has been funded by the Hunter Foundation.