[1] The former Ardscoil Rís student plays his club football for Whitehall Colmcille.
[6] In the All-Ireland quarter-final Costello was a sub again and managed one point in a one-sided game against Monaghan.
[7] He was selected at corner forward against Donegal but Dublin crashed out in the semi-final.
[8] On 1 October 2016, Costello came off the bench and scored three points as Dublin won the All-Ireland final after a replay with Mayo.
[9] Above is the starting lineup vs Galway on 29 June 2024 (Team on 22 September 2013)