Contender cheats and cheat codes for Playstation

Main Event boxers in versus mode
Go to the "Main Event" mode, then create a new boxer, select, then 
immediately save a boxer to a memory card. Repeat this process to 
save a second Main Event boxer to the memory card. Then, start a 
match in 2 player VS mode. Then go to the player selection screen, 
and push Square to select one of the previously saved Main Event 
boxers.

Unlock secret boxers in exhibition mode
Win the World Championship then save your game. Then go to the 
exhibition mode player selection screen and press Square, then 
press Square again. The following characters will be selectabel:
Goober, Rascal, Jackel and Beastman

Boxing trainer in versus mode
Press Square twice at the two player versus mode character 
selection screen.

Custom newspaper photo
Start a match in main event mode. Push L3 or R3  button to take a 
snapshot of the current scene. The photo that was snapped will appear 
in the newspaper at the end of the bout. 

Contender Game Shark Codes:
              
Unlimited Super Punches  for Player 2    
800530DC 0001
              
Disable Super Punches for Player 2          
800530DC 0000
              
Unlimited Health & Stamina  for Player 2 
D00669D4 0000
800669D4 0050
D00669D6 0000
800669D6 3241
D0066A1C 0000
80066A1C 000E
D0066A1E 0000
80066A1E 1020

Unlimited Super Punches  for Player 1    
80052C2C 0001
              
Disable Super Punches for Player 1          
80052C2C 0000
              
Unlimited Health & Stamina  for Player 1 
D00669D4 0000
800669D4 0050
D00669D6 0000
800669D6 3241
D0066A1C 0000
80066A1C 000E
D0066A1E 0000
80066A1E 1420