Seán O'Brien (born 31 July 2000) is an American born Irish rugby union player, currently playing for Pro14 and European Rugby Champions Cup side Connacht.
Although born in Pittsburgh, Sean returned to Dublin before the age of 1, and played his junior rugby at Greystones Rugby Club in Wicklow before winning a JCT and SCT medal with Blackrock College.
Sean was part of the Leinster academy from 2020 to 2023 when he was then offered a professional contract with Connacht Rugby.
[6] O'Brien then travelled with the squad to South Africa, playing in both away games, vs the Sharks and Bulls, scoring his first URC try in Durban.
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