 On 9 September 2017, he came on as a substitute for Barry Murphy in Limerick's 0-17 to 0-11 defeat of Kilkenny in the All-Ireland final.In 2017, O'Reilly joined the Limerick under-25 hurling team.On 18 June 2017, he scored 3-01 from play when Limerick defeated Waterford by 4-12 to 1-19 to win the Munster Championship.