Munster have claimed victory over Leicester – with their 25-16 away win in Welford Road yesterday.
It leaves them in a strong position on top of Pool 4, four points clear of Racing 92.
In the day’s other games, Saracens’ reign as champions is hanging by a thread.
They dropped down to 3rd in Pool 2 after a loss away to Clermont, coupled with the Ospreys’ bounus point win over Northampton.
Elsewhere Wasps blew Ulster’s pool wide open with a 21-3 win over La Rochelle.