He plays hurling with his local club Kilworth and was a member of the Cork senior inter-county team in 2009.
In 2009 he played a prominent role with Cork IT and the team reached the Fitzgibbon Cup semi-finals.
[2] At club level, Mannix was described as Kilworth's star forward.
[3] He also turned in an inspirational performance in Kilworth's All-Ireland Junior Club Hurling Championship quarter-final victory over British junior champions Granuaile.
In Cork's first game of the National Hurling League, he turned in an impressive performance against Dublin, and retained his place on the team to play Tipperary.