Triple Play 97
# A B C D E F G H I J K L M N O P Q R S T U V W X Y Z
Hit a homerun
While in the batter's box, hold R1 + R2 + L1 + L2 and press Up(2), Triangle(2), Up(2), X(2). If you entered the code correctly, you will hear a chime.
Mystery stadium
At the stadium selection screen, press L1, R1, L1, then hold R1 and press Start.
Super players
Enter the custom players option in the Manager screen. Then, enter one of the following case-sensitive names for a player with super skills: