Bordeaux-Begles tore Leinster apart in a dominant 41-19 victory to secure back-to-back Champions Cup crowns with success at San Mames Stadium in Bilbao.
Bath came up against an inspired Bordeaux as their Investec Champions Cup campaign ended in a 38-26 semi-final defeat at Stade Atlantique Bordeaux Metropole.
Salesi Rayasi scored a hat-trick as Bordeaux ran in nine tries and thumped Leicester 64-14 in the Investec Champions Cup at Stade Chaban Delmas.
Harlequins defied their abysmal domestic form to stun La Rochelle 27-17 at Stade Marcel Deflandre and secure home advantage in the Champions Cup round of 16.
Northampton Saints were brought back down to earth after they suffered a 50-28 loss away to Champions Cup holders Bordeaux in a repeat of last season's final.
Munster bounced back from a disappointing defeat to Bath last week to comprehensively beat Gloucester 31-3 in the Champions Cup at Páirc Uí Chaoimh in Cork.
An astonishing start which saw Bath 28-0 ahead inside 19 minutes proved crucial as the Prem side saw off Munster 40-14 in their Champions Cup opener.