Peter Mullen, aged 21, of Tolka Rd, Ballybough, Dublin, pleaded guilty at Dublin Circuit Criminal Court to assaulting Daniel Hegarty and causing him harm at Drumcondra Rd Lower on May 14, 2011.
Mr Hegarty was knocked unconscious. In a victim impact report presented in court, his family say he has had difficulty remembering things since.
Det Garda Fergal Flynn told Lisa Dempsey BL, prosecuting, that gardaí found youths fighting across from Fagan’s Pub in Drumcondra at 10pm.
Mr Hegarty was lying unconscious beside a bus being treated by ambulance staff. His reading on the Glasgow coma scale was 3, which indicates deep unconsciousness and is the lowest possible level on the scale.
Mullen was arrested in September 2011 and told gardaí he had hit Mr Hegarty three times in the face and kicked him once.
He said Mr Hegarty had thrown the first punch.
Mullen said there had been trouble at half-time, when Cork fans shouted at him and threw objects at him and his friends.
After the match, a fight broke out between fans on Richmond Rd.
Mullen said he threw a rock “just to scare them”.
He said a man who had shouted at him earlier grabbed a Shelbourne lad and he got into the middle and got punched.
He said Mr Hegarty hit him and he responded by hitting him twice.
His sentencing was adjourned to July.