Big headed players
Press C-Up(2), C-Down(2), C-Left, C-Right, C-Left, C-Right, B, A, hold Z + Start at the title screen. The announcer will say "Goal" to confirm correct code entry.
Bonus teams
Press Up, L, Up, L, Down, L, Down, L, Left, R, Right, R, Left, R, Right, R, B, A, hold Z + Start at the title screen. The announcer will say "What an incredible comeback!" to confirm correct code entry. Choose the "All Stars" from the team selection screen to select the Euro Stars A, Euro Stars B, Asian Stars, African Stars, All American Stars and World Stars teams. These teams normally appear only after the game is defeated in league mode. Note: Only two additional teams are available in the Japanese version of the game.
Big headed players...