Sports Illustrated for Kids Football [GBA]
Go to season play, go to the cheat code selection, and then enter each of these cheats to build a team of fictional players:
CIRCUIT FUN, BAMPLYR, TARGETSTAR, SIKPOWER, EBPLAYER, SIKSTAR, TOUCHDOWN, RZONESTAR, BESTBUYPWR
150 points for home team
Go to cheats and type in afrpdb
After you play a game in season mode, go to the newspaper and press A, B, A, A. Then, choose to either raise your offense speed by one, your defense strength by one, or your special teams agility by one. This may be repeated as many times as needed.
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, and at the seasons menu, select Cheats and enter 'ILUVMLB'.
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.