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Cheats for Knockout Kings for Playstation
By Electronic Arts

Here are all the known cheat codes for Knockout Kings for Playstation

Enter these codes in at the Main Menu screen.
	Press Left + Circle, Left + Triangle, Left + Square, Left + X	Boxers will have big heads.
Enter these these codes in when given a choice to hit the heavy or speed bag between fights.
	Hold L1 + L2 + R1 + R2 when given a choice to hit the heavy or speed bag between fights.	Lets you regain some of your energy depending on how long you hold the buttons.
Enter these codes in during gameplay.
	Press R1 + R2 + X	This will make your boxer taunt the opponent.