How they stand - So far...

We have two Pool winners - Llanelli Scarlets and Leinster - and four of the eight qualifiers for the quarter-finals - Biarritz Olympique and Munster joining them. This weekend there will be seven other sides - London Wasps, Castres Olympique, Stade Français Paris, Ospreys, Sale Sharks, Leicester Tigers and Northampton Saints - chasing the final four knock-out places, while everyone will be battling for a home draw in the last eight.

POOL1
To come: Castres Olympique v London Wasps; Perpignan v Benetton Treviso
Maximum points: London Wasps - 24; Castres Olympique - 20
London Wasps will win Pool if they avoid defeat in Castres. Castres can also win Pool, but must win to stay in the mix for a runners-up place.
Cannot qualify: Perpignan; Benetton Treviso

POOL 2
To come: Gloucester Rugby v Leinster; Edinburgh v Agen
Maximum points: Leinster - 25
Leinster are Pool winners and are playing for a home draw at Kingsholm.
Cannot qualify: Agen; Gloucester Rugby; Edinburgh

POOL 3
To come: Stade Français Paris v Rugby Calvisano; Sale Sharks v Ospreys
Maximum points: Stade Français Paris - 22; Ospreys - 21; Sale Sharks - 20
Stade are in the driving seat and a bonus point win against Calvisano would seal it for them. Sale and Ospreys are fighting for a runners-up spot.
Cannot qualify: Rugby Calvisano

POOL 4
To come: Cardiff Blues v Bourgoin; Munster v Leicester Tigers
Maximum points: Munster - 27; Leicester Tigers - 24
Munster have qualified and need to avoid defeat to top Pool. Leicester are still in the last eight shake up if they can get a bonus point or more.
Cannot qualify: Cardiff Blues; Bourgoin

POOL 5
To come: Llanelli Scarlets v London Irish; Toulouse v Ulster Rugby
Maximum points: Llanelli Scarlets - 28
Scarlets have won the Pool and are playing for a home draw.
Cannot qualify: Toulouse; Ulster Rugby; London Irish

POOL 6
To come: Overmach Rugby Parma v Border Reivers; Northampton Saints v Biarritz Olympique
Maximum points: Biarritz Olympique 30; Northampton Saints - 25
Biarritz need one point - or deny Saints a winning try bonus point - to top the Pool. Saints are currently best placed runner-up in the six Pools.
Cannot qualify: Border Reivers; Overmach Rugby Parma