| 08 Dec 23 |
r01        | GlasgowGlasgow | 19 - 28 | Northampton SaintsNorthampton S |
| 08 Dec 23 |
r01        | ConnachtConnacht | 5 - 41 | Union Bordeaux BèglesUnion Bordeau |
| 09 Dec 23 |
r01        | RC ToulonnaisRC Toulonnais | 18 - 19 | Exeter ChiefsExeter Chiefs |
| 09 Dec 23 |
r01        | Stade ToulousainStade Toulous | 52 - 7 | Cardiff RugbyCardiff Rugby |
| 09 Dec 23 |
r01        | Bulls Super RugbyBulls Super R | 27 - 16 | SaracensSaracens |
| 09 Dec 23 |
r01        | MunsterMunster | 17 - 17 | Aviron BayonnaisAviron Bayonn |
| 09 Dec 23 |
r01        | Bristol RugbyBristol Rugby | 36 - 34 | Lyon OULyon OU |
| 10 Dec 23 |
r01        | Sale SharksSale Sharks | 28 - 5 | Stade Français ParisStade Françai |
| 10 Dec 23 |
r01        | Leicester TigersLeicester Tig | 35 - 26 | StormersStormers |
| 10 Dec 23 |
r01        | Stade RochelaisStade Rochela | 9 - 16 | LeinsterLeinster |
| 10 Dec 23 |
r01        | Racing Métro 92Racing Métro | 28 - 31 | HarlequinsHarlequins |