[4] Cardiff Blues 16-26 Ospreys [4] 2017-11-17 19:15
Stadium: Cardiff Arms Park Round: 1
Head to Head
| Pro 14 Rugby | 2017/04/15 13:45 | Cardiff Blues v Ospreys | W | 35-17 |
| LV Cup | 2016/11/18 19:15 | Cardiff Blues v Ospreys | L | 7-31 |
| Pro 14 Rugby | 2016/10/07 18:35 | Ospreys v Cardiff Blues | L | 46-24 |
| United Rugby Championship | 2016/04/30 13:30 | Cardiff Blues v Ospreys | L | 27-40 |
| United Rugby Championship | 2015/11/28 15:00 | Ospreys v Cardiff Blues | L | 13-6 |
| United Rugby Championship | 2015/04/25 13:30 | Cardiff Blues v Ospreys | L | 23-31 |
| United Rugby Championship | 2014/10/12 15:00 | Ospreys v Cardiff Blues | L | 26-15 |
Home History
| LV Cup | 2017/11/11 17:00 | Newcastle Falcons v Cardiff Blues | L | 57-0 |
| Pro 14 Rugby | 2017/11/04 19:35 | Cardiff Blues v Zebre | W | 37-8 |
| Pro 14 Rugby | 2017/10/28 18:35 | Scarlets v Cardiff Blues | L | 30-17 |
| British & Irish Cup | 2017/10/21 18:30 | Leinster A v Cardiff Blues | L | 29-10 |
| European Rugby Challenge Cup | 2017/10/20 19:00 | Toulouse v Cardiff Blues | W | 15-17 |
| British & Irish Cup | 2017/10/14 13:30 | Cardiff Blues v Bristol | L | 7-31 |
| European Rugby Challenge Cup | 2017/10/13 18:00 | Cardiff Blues v Lyon | W | 29-19 |
| Pro 14 Rugby | 2017/10/06 18:35 | Cardiff Blues v Newport Gwent Dragons | W | 43-29 |
Away History
| LV Cup | 2017/11/10 19:30 | Ospreys v Wasps | L | 12-36 |
| Pro 14 Rugby | 2017/11/04 17:30 | Edinburgh v Ospreys | L | 37-10 |
| Pro 14 Rugby | 2017/10/27 18:35 | Ospreys v Newport Gwent Dragons | W | 28-14 |
| European Rugby Champions Cup | 2017/10/21 18:45 | Saracens v Ospreys | L | 36-34 |
| British & Irish Cup | 2017/10/21 14:00 | Bedford Blues v Ospreys | L | 43-19 |
| European Rugby Champions Cup | 2017/10/15 16:30 | Ospreys v Clermont | L | 21-26 |
| British & Irish Cup | 2017/10/14 13:30 | Ospreys v Munster | L | 6-24 |
| Pro 14 Rugby | 2017/10/07 18:35 | Ospreys v Scarlets | L | 18-19 |