| Home team | Leinster |
| Away team | Ospreys |
| Venue | Aviva Stadium |
| Competition | URC |
| Kick off time | 5:15 pm (UK) |
| Watch Live in the UK | Premier Sports |
Leinster vs Ospreys preview as the sides meet at the Aviva Stadium in Dublin.
Leinster currently sit third in the table and have the chance to go top with a win, if those above them fail to pick up a result. A loss could see them drop as low as fifth.
The Ospreys currently sit in 11th but can finish in any of the positions from 10th to 12th depending on the result.
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Leinster vs Ospreys lineups to follow
| Leinster | Ospreys | ||||
| Forwards | |||||
| Cahir | 1 | Phillips | |||
| G McCarthy | 2 | Daniel | |||
| Slimani | 3 | Warren | |||
| McCarthy | 4 | Davies | |||
| Mangan | 5 | Owen-Sutton | |||
| Conan | 6 | Ratti | |||
| Van Der Flier | 7 | J Morgan | |||
| Culhane | 8 | Moriarty | |||
| Backs | |||||
| Gibson-Park | 9 | Morgan-Williams | |||
| Byrne | 10 | Edwards | |||
| Larmour | 11 | Hopkins | |||
| Henshaw | 12 | Watkin | |||
| Ringrose | 13 | Boshoff | |||
| T O’Brien | 14 | GIles | |||
| J O’Brien | 15 | Walsh | |||
| Replacements | |||||
| Kelleher | 16 | Lloyd | |||
| Usanov | 17 | Jones | |||
| Furlong | 18 | Hire | |||
| Deegan | 19 | Roberts | |||
| Doris | 20 | Deaves | |||
| Gunne | 21 | Hardy | |||
| Frawley | 22 | Cokanasiga | |||
| Lowe | 23 | L Morgan | |||
Recent Form:
Leinster (Home team):
| Result | Date | Competition | Opponent | Score |
| Won | 9th May 2026 | URC | Lions | 31-7 |
| Won | 2nd May 2026 | Champions Cup | Toulon | 29-25 |
| Loss | 25th April 2026 | URC | Benetton | 29-26 |
| Won | 18th April 2026 | URC | Ulster | 21-29 |
| Won | 11th April 2026 | Champions Cup | Sale Sharks | 43-19 |
Leinster have won six out of their last seven games with the shock defeat to Benetton, their only loss in that time. They picked a mixed team to take on the Lions and won 31-7 to set themselves up positively ahead of the Champions Cup final.
The game was closely poised at 14-7 at halftime and Leinster brought on their strong bench to win the second half 17-0.
Ospreys (Away team):
| Result | Date | Competition | Opponent | Score |
| Won | 9th May 2026 | URC | Scarlets | 27-20 |
| Loss | 24th April 2026 | URC | Cardiff | 24-21 |
| Won | 18th April 2026 | URC | Sharks | 21-17 |
| Loss | 4th April 2026 | Challenge Cup | Ulster | 28-24 |
| Loss | 28th March 2026 | URC | Connacht | 21-14 |
The Ospreys have won two of their last three matches, both of which came in home games. All of their last five matches have been decided by seven points or less. In the last round, they beat the Scarlets 27-20. They took a 17-5 halftime lead, with all points coming from Dan Edwards. With 10 minutes to go, they found themselves 20-17 behind, but a Jac Morgan converted try, and Dan Edwards’ penalty with the clock in the red helped them to a win by seven.
Leinster vs Ospreys head-to-head record (last five matches):
| Date | Competition | Winner | Score |
| 14th February 2025 | URC | Leinster | 19-22 |
| 11th May 2024 | URC | Leinster | 61-14 |
| 7th January 2023 | URC | Leinster | 19-24 |
| 19th February 2022 | URC | Leinster | 29-7 |
| 19th March 2021 | URC | Ospreys | 19-24 |
Leinster have won the last four matches between these with their home win in 2024 providing a 47 point win at home. The last Ospreys win against Leinster came during the Six Nations in 2021, where the Welsh side came back from 19-3 behind to win 24-19.
