Hit Grand slam:
[Submitted by:SNailB8ter]
Create a player and enter *SLUGGER* as a name. He will always hit a grand slam if batting with the bases loaded.

110 mph pitches:
[Submitted by:SNailB8ter]
Create a player and enter *STRONG ARM* as a name.

All-Star teams:
[Submitted by:SNailB8ter]
At the team selection screen, hold L1 + L2 + R1 + R2 and press Up, Triangle, Right, Circle to unlock all-star teams.

Homerun sounds:
While running around the bases after hitting a homerun, press Triangle to hear a soft horn, Square to hear a loud horn, or Circle to hear a whistle.