at the end of the round five match of the 1907 vfl season, casey struck a 16-year-old spectator and rendered him unconscious for 15 minutes. he was later found guilty of assault and fined £3 in round four of the 1910 vfl season, casey was reported for striking george topping, in retaliation for the carlton player's king hit on casey's teammate bert streckfuss. he received a 16-week suspension, meaning that he missed the rest of the year and the start of the 1911 season.