| 21 Oct 23 | r01        | Cardiff RugbyCardiff Rugby | 22 - 23 | BenettonBenetton |
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| 29 Oct 23 | r02        | DragonsDragons | 9 - 16 | Cardiff RugbyCardiff Rugby |
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| 04 Nov 23 | r03        | ScarletsScarlets | 31 - 25 | Cardiff RugbyCardiff Rugby |
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| 10 Nov 23 | r04        | Cardiff RugbyCardiff Rugby | 12 - 18 | Bulls Super RugbyBulls Super R |
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| 17 Nov 23 | r05        | ZebreZebre | 22 - 22 | Cardiff RugbyCardiff Rugby |
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| 24 Nov 23 | r06        | Cardiff RugbyCardiff Rugby | 31 - 24 | StormersStormers |
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| 02 Dec 23 | r07        | Cardiff RugbyCardiff Rugby | 23 - 29 | ScarletsScarlets |
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| 26 Dec 23 | r08        | Cardiff RugbyCardiff Rugby | 55 - 21 | DragonsDragons |
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| 01 Jan 24 | r09        | OspreysOspreys | 27 - 21 | Cardiff RugbyCardiff Rugby |
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| 17 Feb 24 | r10        | Cardiff RugbyCardiff Rugby | 12 - 16 | ConnachtConnacht |
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| 02 Mar 24 | r11        | Cardiff RugbyCardiff Rugby | 20 - 33 | LeinsterLeinster |
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| 22 Mar 24 | r12        | GlasgowGlasgow | 17 - 13 | Cardiff RugbyCardiff Rugby |
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| 30 Mar 24 | r13        | MunsterMunster | 20 - 15 | Cardiff RugbyCardiff Rugby |
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| 19 Apr 24 | r14        | UlsterUlster | 19 - 17 | Cardiff RugbyCardiff Rugby |
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| 27 Apr 24 | r15        | Cardiff RugbyCardiff Rugby | 7 - 24 | EdinburghEdinburgh |
| |
| 11 May 24 | r16        | Lions Super RugbyLions Super R | 34 - 13 | Cardiff RugbyCardiff Rugby |
| |
| 18 May 24 | r17        | The SharksThe Sharks | 14 - 36 | Cardiff RugbyCardiff Rugby |
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| 01 Jun 24 | r18        | Cardiff RugbyCardiff Rugby | 29 - 33 | OspreysOspreys |