A controversial title fight between No. 1 lightweight contender Anthony Pettis and UFC featherweight champion Jose Aldo has been sidelined. Pettis injured his knee, forcing him out of the UFC 163 headliner. Chan Sung Jung, aka “The Korean Zombie,” has agreed to step in and take his place, challenging Aldo for the belt. UFC president Dana White on Friday tweeted news of the change.
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