International Superstar Soccer Pro Evolution

All-star teams:
Press Up(2), Down(2), Left, Right, Left, Right to unlock two All-Star teams in cup mode.

Bonus teams:
Successfully complete the game with all the league and cups under the hard difficulty setting. The European All-Star Team, World All-Star Team, Classic European All-Star Team, and Classic World All-Star Team will be unlocked. Successfully complete Olympic mode with Japan to unlock the All Golden Japan team.

To get the normal clubs like Ajax, Manchester, and others, win the Master League.
Information in this section was contributed by c00lb0y

Bonus cup:
Win all the normal cups to unlock a bonus cup.

Bonus stadium:
Win the Konami Cup under any difficulty setting to unlock the Clubhouse stadium in exhibition mode.
Information in this section was contributed by rijejrj.

Listen to play-by-play commentary in training mode:
If you are tired of listen the always repeated drums in training mode, pause game play. Select "Audio Settings" and turn off the play-by-play option. Resume the game, then pause again. Select "Audio Settings" and turn on play-by-play. Return to the game and you will hear Jonh Kabira (locutor).
Information in this section was contributed by CanneD.