![Former Leinster ace Conor O'Brien has announced his retirement from rugby with immediate effect | The Irish Sun Former Leinster ace Conor O'Brien has announced his retirement from rugby with immediate effect | The Irish Sun](https://www.thesun.ie/wp-content/uploads/sites/3/2022/08/Untitled-design-2022-08-29T164211.156.jpg?strip=all&quality=100&w=1080&h=800&crop=1)
Former Leinster ace Conor O'Brien has announced his retirement from rugby with immediate effect | The Irish Sun
Leinster star Conor O'Brien has been forced to retire | Ultimate Rugby Players, News, Fixtures and Live Results
Leinster Rugby on X: "🙌 | Centre Conor O'Brien returns to full training this week! 💪 #MUNvLEI #URC https://t.co/qzxzXuXwvV" / X
![Former Leinster ace Conor O'Brien has announced his retirement from rugby with immediate effect | The Irish Sun Former Leinster ace Conor O'Brien has announced his retirement from rugby with immediate effect | The Irish Sun](https://www.thesun.ie/wp-content/uploads/sites/3/2022/08/f4b1eda8-c42e-4b12-a16a-17c2625f2273.jpg?strip=all&w=960)
Former Leinster ace Conor O'Brien has announced his retirement from rugby with immediate effect | The Irish Sun
![Ireland's Conor O'Brien during the Under 20's Rugby Union World Cup match at the Manchester City Stadium, Manchester Stock Photo - Alamy Ireland's Conor O'Brien during the Under 20's Rugby Union World Cup match at the Manchester City Stadium, Manchester Stock Photo - Alamy](https://c8.alamy.com/comp/2CHAATB/irelands-conor-obrien-during-the-under-20s-rugby-union-world-cup-match-at-the-manchester-city-stadium-manchester-2CHAATB.jpg)
Ireland's Conor O'Brien during the Under 20's Rugby Union World Cup match at the Manchester City Stadium, Manchester Stock Photo - Alamy
![Leinster ace Jimmy O'Brien striving to succeed in rugby ranks as he looks to earn more promotions in Leo Cullen's side | The Irish Sun Leinster ace Jimmy O'Brien striving to succeed in rugby ranks as he looks to earn more promotions in Leo Cullen's side | The Irish Sun](https://www.thesun.ie/wp-content/uploads/sites/3/2022/05/d3502e60-235a-433a-86c9-159d48996de8.jpg?strip=all&w=745)
Leinster ace Jimmy O'Brien striving to succeed in rugby ranks as he looks to earn more promotions in Leo Cullen's side | The Irish Sun
![Leinster Rugby on X: "Great news this week that Conor O'Brien (hamstring) and Vakh Abdaladze (back) have returned to full training! 💪🔵 Read yesterday's squad update: https://t.co/4bsXhqjeJC #LeinsterRugby https://t.co/KPpTxjaOxv" / X Leinster Rugby on X: "Great news this week that Conor O'Brien (hamstring) and Vakh Abdaladze (back) have returned to full training! 💪🔵 Read yesterday's squad update: https://t.co/4bsXhqjeJC #LeinsterRugby https://t.co/KPpTxjaOxv" / X](https://pbs.twimg.com/media/EbQ6g-6WoAERANV.jpg:large)