On 5 July 2015, he won a Leinster Championship medal on the field of play following a 1-17 to 1-15 defeat of Dublin in the final.
[6] Walsh won a Leinster Championship medal on 5 July after Kilkenny's 0-30 to 1-15 defeat of Wexford in the final.
[7] On 9 September, he lined out at left wing-back when Kilkenny suffered a 0-17 to 0-11 defeat by Limerick in the All-Ireland final.
[8] Walsh joined the Kilkenny senior team prior to the start of the 2018 National League.
Walsh made his first appearance for the Kilkenny senior team on 27 January 2019 when he lined out at left corner-back in a 2-18 to 0-17 defeat of Cork.