The Scarlets and Exeter Chiefs are both still looking for their first victory in the Pool and will see this clash as the perfect way for them to get a much-needed win after they both lost their opening two games.
Both sides know that a bonus point victory is a must if they are to hang on to the coat tails of the two European juggernauts and the two sides - ASM Clermont Auvergne and defending champions Leinster - fighting it out for top spot in the Pool.
The Welsh side, who are second in the Pro12, have suffered two morale sapping defeats to a couple of this season's favourites to be crowned Kings of Europe but welcome back key internationals like Jonathan Davies and Matthew Rees.
The English side, who are mid-table in the Premiership, have yet to score a try in this Pool but won't have a better chance to do that than against the Scarlets who have leaked the most tries in the group.
The Chiefs, who are in their first season of Heineken Cup rugby, have impressed everybody but they will be wary of the Scarlets experience in the tournament, especially at home at Parc Y Scarlets.
The Scarlets need to get back to winning ways and have lost five or their last six matches in the Heineken Cup and have a record of won 13 and lost 18 against English opponents in the tournament.
The Chiefs will be able to tap into the inside knowledge of their lock Damien Welch, who joined from the Scarlets in the summer, and spent a couple of seasons in west Wales.
Match Facts
• Scarlets have 13 wins and 18 losses against English opposition in this tournament, a win rate of 42%.
• The Welsh side have lost five of their last six Heineken Cup matches, three of which were settled by margins of a converted try or under.
• Exeter are one of two teams yet to touch down for a try in this year's tournament, the other being scoreless Edinburgh.
• Exeter have averaged the most passes per game so far this season (179).
• Scarlets' 14 turnovers conceded so far this season is the lowest total in the tournament.
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