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For so long the most potent attack in European rugby, Leinster's lack of tries may be the cause for them missing out on the Quarter finals.
Five tries against Llanelli last weekend ensured they would live to fight another day, but they will need to post a big score on Saturday against the Exeter Chiefs if they are to qualify.
While Leinster will go in blind, their domestic rivals, Munster will play on Sunday knowing exactly what they need to do to qualify.
Leinster showed glimpses of their best against Llanelli and have a host of star names returning to fitness. Expect them to come out all guns blazing.
Exeter for their part, are a hugely dogged side and will not role over for anyone, even the reigning European Champions.
That said, they have a relatively small squad given the number of games they have to play, and they showed signs of fatigue last weekend.
Leinster have too much class and desire to fall short of at least putting up a challenge.
Clermont only need a point to secure a home tie, which they should wrap up with an easy win.
Prediction: Leinster bonus point win and Clermont bonus point win