With one Round to go seven sides are chasing the final four knock-out places in Europe’s elite rugby competition…

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.

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

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

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

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

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

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