Leinster held on and survived a late scare to reach this season's Champions Cup final by beating Toulon 29-25 at the Aviva Stadium in Dublin.
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.
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.
Build-up, analysis, reports and reaction from the 2024/25 Champions Cup with the quarter-finals the next step on the road to May's final in Cardiff.
Former Wales fly-half Dan Biggar has announced he will retire from rugby at the end of the season.
France full-back Melvyn Jaminet has been hit with a 34-week suspension by the French Rugby Federation after he posted a video of himself making a racist remark.
England internationals Kyle Sinckler and Lewis Ludlam will join Toulon next season, the French club's president Bernard Lemaitre said.
England international Lewis Ludlam will leave Northampton at the end of this season ahead of an expected move to France.
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