Collins first lined out for Cork as a member of the minor team during the 2016 Munster Championship. He made his first appearance in goal on 6 April in a 0-17 to 1-10 defeat of Waterford.[1]
Collins was eligible for the minor grade again the following year. On 9 July, he was in goal when Cork defeated Clare by 4-21 to 0-16 to win the Munster Championship for the first time since 2008.[2] On 3 September, Collins was again in goal when Cork suffered a 2-17 to 2-15 defeat by Galway in the All-Ireland final.[3]
Under-21 and under-20
Collins subsequently joined the Cork under-21 team for the 2018 Munster Championship and took over as goalkeeper from his brother Patrick.[4] On 4 July, he won a Munster Championship medal following Cork's 2-23 to 1-13 defeat of Tipperary in the final.[5] On 26 August, Collins was in goal for Cork's 3-13 to 1-16 All-Ireland final defeat by Tipperary.[6] He was later named as goalkeeper on the Team of the Year.[7]
On 3 July 2019, Collins made his first appearance for Cork's inaugural under-20 team in the Munster Championship. He lined out in goal in the 1-20 to 0-16 defeat of Limerick.[8] On 23 July 2019, Collins was again in goal when Cork suffered a 3-15 to 2-17 defeat by Tipperary in the Munster final.[9] He was again selected in goal when Cork faced Tipperary for a second time in the All-Ireland final on 24 August 2019, however, he ended the game on the losing side after a 5-17 to 1-18 defeat.[10]
Senior
Collins was a late addition to the Cork senior team during the 2018 All-Ireland Championship.[11] On 29 July, he was an unused substitute when Cork suffered a 3-32 to 2-21 extra-time defeat by Limerick in the All-Ireland semi-final.[12]