The stage is set at the Aviva Stadium this Saturday for the latest installment of what has arguably become the defining rivalry in modern European club rugby: Leinster vs. La Rochelle. This Investec Champions Cup Round 3 clash carries the weight of recent history, with the French contingent having denied Leinster their fifth star. This match is far more than a pool-stage fixture; it is a battle for psychological supremacy between the two titans of the Northern Hemisphere.