Head to Head
| United Rugby Championship | 2023/03/04 19:35 | Cardiff Blues v Ulster | W | 20-42 |
| United Rugby Championship | 2022/03/04 19:35 | Ulster v Cardiff Blues | W | 48-12 |
| Pro 14 Rugby | 2020/11/02 18:00 | Cardiff Blues v Ulster | W | 7-11 |
| Pro 14 Rugby | 2019/10/25 18:35 | Ulster v Cardiff Blues | W | 23-14 |
| Pro 14 Rugby | 2018/12/01 15:00 | Ulster v Cardiff Blues | W | 16-12 |
| Pro 14 Rugby | 2018/03/24 15:15 | Cardiff Blues v Ulster | L | 35-17 |
| United Rugby Championship | 2017/04/07 18:35 | Ulster v Cardiff Blues | D | 24-24 |
| Pro 14 Rugby | 2016/12/03 17:15 | Cardiff Blues v Ulster | W | 22-35 |
| United Rugby Championship | 2016/02/28 14:30 | Cardiff Blues v Ulster | L | 23-13 |
| United Rugby Championship | 2015/10/23 18:35 | Ulster v Cardiff Blues | W | 24-17 |
| United Rugby Championship | 2015/03/27 19:35 | Ulster v Cardiff Blues | W | 36-17 |
| United Rugby Championship | 2014/09/19 18:35 | Cardiff Blues v Ulster | W | 9-26 |