 After being dropped from the panel the following year, O'Loughlin made his first appearance for the team on 7 May 2018 in a 3-18 to 0-13 Munster Championship defeat of Clare.In November 2017, O'Loughlin was added to the Limerick senior hurling panel and made his first appearance for the team during the pre-season Munster League.He made his first appearance in the National Hurling League on 28 January 2018 in a 1-25 to 0-18 defeat of Laois.