It was another successful weekend in the Champions Cup for Leinster and Munster, with Leinster guaranteeing their qualification for the last sixteen with their win over La Rochelle, and Munster all but doing the same against Saracens.
While Ulster weren't so fortunate, their European season is far from over with both Champions Cup and Challenge Cup qualification still on the cards.
So ahead of the final weekend of fixtures, we've compiled all the permutations for the three Irish provinces in the Champions Cup.
Put simply, first place in each group is guaranteed home ties in the last sixteen and quarter-finals. Second in each group is guaranteed a home time in the round of sixteen, while third and fourth place in each group will face away ties in the knockout stages. Home semi-finals will go to the top two ranked group leaders.
Here's how the overall table currently looks.
Champions Cup: R3 – The Mega Table
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Leinster Permutations
Opponent this weekend: Bath (h)
Leinster's position in the knockout stages is now certain. The province will be playing to guarantee home semi-final qualification when the Gallagher Premiership leaders come to the Aviva Stadium on Saturday.
- Leinster are currently only topped by Bordeaux in the overall standings. While they are now guaranteed a home round of sixteen clash, any form of win over Bath would also see them guaranteed a home quarter-final should they qualify as well.
- In order to qualify for a home semi-final, Leinster need to finish in the top two overall (currently second) and top of their group. Any form of win will see them top their group. With Europe's top overall team Bordeaux hosting the Sharks, Leinster are effectively battling Toulon for the other home semifinal place. Toulon are on 13 points and trail Leinster by a ten point scoring differential, meaning both bonus points and points difference will be pivotal this weekend.
- If Leinster get a bonus point win against Bath on Saturday, Toulon will travel to Sale on Sunday needing a bonus point win while overcoming Leinster's victory total Saturday by 11 to overtake them and claim a home semifinal.

Munster Permutations
Opponent this weekend: Northampton (a)
While technically not qualified, Munster's elimination is highly unlikely and would require a bizarre set of results: here's what they need to do to qualify, guarantee a home round of sixteen tie, and potentially earn home quarter and semi-final draws.
They will travel to Northampton this Saturday hoping to claim top spot in the very tight pool 3 and knowing a bonus point win could earn them home ties in at least the next two rounds.
- Munster are all but qualified for the tournament, with only a bizarre set of circumstances where Saracens claim at least a point, Castres claim at least two points and Stade Francais claim five points and make up the existing 55-point difference enough to eliminate Munster (Saracens and Castres must play each other). To remove any uncertainty, even a single point from Munster's game with Northampton will guarantee qualification to the Round of 16.
- Munster will be guaranteed a home tie in the last-sixteen if they claim a win over Northhampton.
- Finally, if Munster beat Northampton with a bonus point win and stayed ahead of Saracens on points difference (presuming they beat Castres, Munster would be finish of pool 3 and would be guaranteed a home quarter-final. (it's technically possible but unlikely they could guarantee a home semi-final as well if a number of other results went their way).
- With Saracens playing Castres on Sunday as well, this group where just two points separate the top four teams could still take plenty of twists and turns.

Ulster Permutations
Opponent this weekend: Exeter (h)
Yet to claim a single point and carrying a - 89 score difference, Ulster's Champions Cup is all but over, that said a result over the Exeter Chiefs would see them keep their European hopes alive by means of a Challenge Cup spot. Here's what they need to do:
- In order to qualify for the Champions Cup knockout stages, nothing short of a bonus point win over the Exeter Chiefs next weekend will do. Even then, Richie Murphy's men will need Bordeaux to beat the Sharks and prevent them claiming either a try or losing bonus point. Should that happen, Ulster and the Sharks would be level on five points, although Ulster are 56 points behind the South Africans on points difference, meaning Ulster would need a resounding win over Exeter and would need Bordeaux to beat the Sharks comprehensively.
- Should that not transpire, Ulster are still eligible to qualify for the Challenge Cup round of sixteen, with a draw or win over the Exeter Chiefs enough to keep their European season alive.
