Just saw Dana tweeted that Pettis hurt is knee and is out of UFC 163 in Rio. He will be replaced by Chan Sung Jung AKA the Korean Zombie. I'm bummed that we miss out on one of the more exciting fights this summer, but that's the breaks. Now there is an argument to be made on who really deserves to be the replacement here. I kind of feel that perhaps Lamas deserved it a little more but the Korean Zombie will sell more PPV and is definatley a worthy replacement.