Aaron Costello

As a student at University College Cork, Costello also became involved in Gaelic games. On 8 March 2012, he came on as a 16th-minute substitute to win an All-Ireland Freshers Championship medal following a 0-24 to 3-11 defeat of the University of Limerick in the final.[1]

Costllo joined the Kilmallock club at a young age and played in all grades at juvenile and underage levels, enjoying championship success in the minor and under-21 grades before eventually joining the club's senior team.

On 7 October 2012, Costello was named on the bench when Kilmallock faced Adare in the Limerick Senior Championship final. He remained on the bench for the entire game but collected a winners' medal following the -15 to 0-15 victory.[2]

On 19 October 2014, Costello won his first championship medal on the field of play following a 1-15 to 0-14 defeat of reigning champions Na Piarsaigh in the final.[3] He later won a Munster Championship medal on 23 November 2014 following a 1-32 to 3-18 extra-time defeat of Cratloe.[4] On 17 March 2015, Costello was at left corner-back when Kilmallock suffered a 1-18 to 1-06 defeat by Ballyhale Shamrocks in the All-Ireland final at Croke Park.[5]

On 14 December 2018, Costello was included on John Kiely's first Limerick squad for the 2019 season.[6] He made his first appearance for the team on 20 December 2018 when he came on as a 48th-minute substitute for Lorcan Lyons in Limerick's 4-14 to 0-11 defeat of Kerry in the Munster League.[7] On 9 March 2019, Costello made his first appearance in the National League when he came on as a half-time substitute for Tom Condon in the 2-22 to 0-11 defeat Laois.[8] On 31 March 2019, he was a member of the extended panel when Limerick defeated Waterford by 1-24 to 0-10 to win the National League title.[9] On 30 June 2019, Costello won a Munster Championship medal as a non-playing substitute following Limerick's 2-26 to 2-14 defeat of Tipperary in the final.[10]