RIO DE JANEIRO – Although he was billed as a “Korean Zombie” who could withstand an inordinate amount of damage, even Chan Sung Jung couldn’t fight through an injured shoulder. Jung (13-4 MMA, 3-1 UFC), a title challenger well known for his past durability, became easy prey for UFC featherweight champion Jose Aldo (23-1 MMA, 5-0 UFC) once the injury occurred in the fourth round. The title fight headline Saturday’s UFC 163 pay-per-view event at Rio de Janeiro’s HSBC Arena. Jung, an injury replacement for Anthony Pettis, entered the five-round fight as a significant underdog and following a 15-month layoff due to injuries. Aldo clearly was getting the better of the challenger early in the fight, but it took a painful injury for Jung to finally succumb to the champ