Enter the following as a coaches name when doing a season to unlock the corresponding player.

Unlock Sammy Sosa:
BABYBEAR

Unlock Dontrelle Willis:
BIGFISH


Unlock Extra Players and Fields
Complete the following tasks to unlock the corresponding effect.

Unlock Jim Thome:
Pitch a shut-out (Opposing team doesn't score in the game).

Unlock Aquadome:
Hit Home Runs into 2 bodies of water

Unlock Dontrelle Willis:
One of your kids gets 45 Strikeouts

Unlock Mike Piazza:
Turn 2 double plays in one game

Unlock Abner Dubbleplay:
Earn 20 Skill Certificates

Unlock Sammy Sosa:
Earn Grand Slam Certificate