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Playstation - V-Tennis cheats

Unlock Adversa as playable character:
Hold L1 + R2 + Up + Square and press X at the character selection screen. 
Shout will confirm the correct code entry.

Unlock Mr. Tonkin as playable character:
Push L2, L2, R1, R1, R1, Down, Triangle, Triangle, Triangle, Triangle, Circle 
at the character selection screen. Shout will confirm the correct code entry.

Unlock Mattox as playable character:
Push L2, L2, R1, R1, R1, Down, Triangle, Triangle, Triangle, Triangle, X at 
the character selection screen. Sound of a bouncing ball will confirm the 
correct code entry.

Unlock Mrs. Tonkin as playable character:
Hold L1 + R2 + Up + Square and press Circle at the character selection screen. 
Sound of a bouncing ball will confirm the correct code entry.