The Scarlets will be under no illusions that they have to do 'the double' over the Saints when the two sides come face-to-face at Parc y Scarlets on Saturday afternoon.
The Welsh side, who have reached three Heineken Cup semi-finals, know they need to get their campaign back on track after their 19-13 defeat to Munster in Irelandin their last game.
The Scarlets are five points behind Pool leaders, Munster, and need a victory to keep in touch with the Irish province and to keep their dream of a first quarter finals place in four years alive.
The Saints, who won the Heineken Cup in 2000 and were beaten finalists in last season's tournament, have endured a miserable European campaign and have already failed to qualify for the knockout stages.
The English Premiership outfit, though, could still have a major bearing on whether the Scarlets and Munsterqualify for the quarter-finals because they play both of them in the final two games of the Pool.
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