DHL Stormers V Stade Rochelais RefereeChristophe Ridley (Eng)
assistant referee 1 AR 1Simon Harding (Eng)
assistant referee 2 AR 2Gianluca Gnecchi (Ita)
TMOAndrea Piardi (Ita)
Saracens V Connacht Rugby RefereeLuc Ramos (Fra)
assistant referee 1 AR 1Thomas Chereque (Fra)
assistant referee 2 AR 2Jeremy Rozier (Fra)
TMOPatrick Dellac (Fra)
Union Bordeaux-Bègles V Bristol Bears RefereeFrank Murphy (Ire)
assistant referee 1 AR 1Peter Martin (Ire)
assistant referee 2 AR 2Padraic Reidy (Ire)
TMOOlly Hodges (Ire)
Lyon V Vodacom Bulls RefereeMike Adamson (Sco)
assistant referee 1 AR 1Fin Brown (Sco)
assistant referee 2 AR 2Jonny Perriam (Sco)
TMOAndrew McMenemy (Sco)
Leinster Rugby V Sale Sharks RefereePierre Brousset (Fra)
assistant referee 1 AR 1Kevin Bralley (Fra)
assistant referee 2 AR 2Pierre-Baptiste Nuchy (Fra)
TMODenis Grenouillet (Fra)
Cardiff Rugby V Bath Rugby RefereeSam Grove-White (Sco)
assistant referee 1 AR 1Rob McDowell (Sco)
assistant referee 2 AR 2Ruairidh Campbell (Sco)
TMOHollie Davidson (Sco)
Ulster Rugby V Racing 92 RefereeLuke Pearce (Eng)
assistant referee 1 AR 1Jon Healy (Eng)
assistant referee 2 AR 2Joe James (Eng)
TMOTom Foley (Eng)