To activate cheats, go to the main menu and press the following combinations:
All stadiums: Down, Up, Left, Right, Up, Right, Up, Down
All teams: Left, Right(2), Down(2), Left, Up(2)
All players: Left, Up, Left, Right, Down, Right, Left, Up
All uniforms: Up, Down, Right, Left, Down, Right, Down, Up
Maximum pitch break: Right(2), Up(2), Down(2), Left(2)
Maximum pitch speed: Up(2), Left, Right, Left, Right, Up(2)
Run faster: Left(3), Up, Right(3), Down
Run slower: Right(3), Up, Left(3), Down
Big ball: Up, Right, Down, Left, Right, Down, Left, Up