Munster In Must-Win Game At Thomond Park

Munster have a must-win clash with Castres (pr: cast) if they are to guarantee progression to the knock-out stages of the Investec Champions Cup.

The Thomond Park fixture gets underway at 5.30.

Before that, Leinster go in search of a top-two seeding away to Bayonne (pr: bye-on) from 3.15pm Irish time.

While in the Challenge Cup, Ulster round off the pool stages by welcoming Stade Francais to Belfast from 1.

And Connacht will secure a place in the knockout stages if they beat Montauban at Dexcom Stadium, where kick-off is at 8.