Two-time European winners Munster were dumped out of the Champions Cup at the pool stage for just the fourth time since 1998 as they were stunned by Castres at Thomond Park 31-29.
Glasgow stormed back from a 14-point deficit to open their Champions Cup campaign with a 26-21 victory at Sale Sharks.
Northampton registered nine tries as they thrashed Bayonne 61-14 to reach the Investec Champions Cup knockout stages.
Munster have issued stadium bans to the supporter who grabbed Bayonne's Konstantin Mikautadze during a scuffle between players at Thomond Park.
Jack Crowley missed a last-gasp drop-goal as Munster were held to a draw at home to Bayonne in Champions Cup Pool 3, with the French side striking late.
France's Fabien Galthie has named nine uncapped players in his 42-man squad for next month's Tests vs Argentina, Georgia and New Zealand.
After a genuine renaissance year in 2020, can France go one better and clinch the silverware that alluded them last year in 2021?
Leicester beat Bayonne, Ospreys were too strong for Worcester and London Irish claimed a bonus-point victory over Pau in the European Challenge Cup.
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