Sports Illustrated for Kids Baseball [GBA]
Start a season. Select the "Cheats" option at the seasons main menu. Enter one of the following codes to unlock an All-Star player to place on your team.
Start a season. Select the "Cheats" option at the seasons main menu. Enter ILUVMLB as a code.
Faster defense in football
Hold [B] during a tackle to run faster.
Further hits in baseball
Hold [A] after hitting the ball to make it travel further.