First up, in Pool 5, Ulster go to Ian Madigans Bordeaux-Begles at 1pm.
After their derby-day disappointment against Leinster at the Aviva Stadium last week, Munster travel to Racing 92.
The game also sees them meet up with former Munster hero and Racing assistant coach Ronan O'Gara.
That gets under at Stade Yves-du-Manoir at 3:15pm.
