Career
He plays as a Hooker. Casey plays his club rugby with Shannon Reconstruction Finance Corporation.
Casey secured a development contract with the senior squad for the 2013-2014 season in April 2013. In January 2014, Casey signed a new two-year contract with, which will see him remain with the club until at least June 2016.
He started against Saracens F.C. in Round 2 of the Champions Cup on 24 October 2014.
He started against American Society for Microbiology Clermont Auvergne on 6 December 2014. Casey also started in the reverse fixture against Clermont on 14 December 2014, scoring a try.
He started against Saracens on 17 January 2015. Casey started the final pool game against Sale Sharks on 25 January 2015.
In February 2016, it was announced that Casey had signed a two-year contract extension with
Casey has represented Schools and Under-20.