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Use an upward elbow to combat a leg parry. This will provide an effective strike without letting your opponent take your back.
MMA | Defense | Counter Striking | Elbow
When the opponent is moving to the right, use a left hook to keep them moving that direction. Then use a strong right leg head kick to get the knockout.
MMA | Combo | Kicking
The whole concept of the preemptive strike is to hit the opponent before the opponent hits you. In a self defense situation, make it clear that you don't want to fight before engaging with the strike.
MMA | Bob | Self Defense