Setup
Insert the Action Replay MAX into your Nintendo DS. Turn the power on. Insert the "Backyard Sports: Sandlot Sluggers" game, and wait for the Action Replay MAX to read the data and recognize the game title. Scroll down to the "Master Code" and press "A" to turn it to the "ON" position. Press "B" to add a new cheat code for the game.
Points
When you play up to a certain number of points, you can set your team's score so you have one or zero points remaining. Enter the cheat code "94000130 fdfb0000 220bcefc 00000000 d2000000 00000000" to have zero points remaining. In the middle of a game, hold "Select" and press "L" to activate the cheat and automatically win. Enter the cheat "94000130 fefb0000 220bcefc 00000001
d2000000 00000000" to have one point remaining. In the middle of a game, hold "Select" and press "R" to set this cheat.
Max Power
Enter the cheat code "94000130 fcff0000 220bce5a 0000000a d2000000 00000000" for maximum power. Press "L" and "R" simultaneously to activate this cheat at any time.
Max Speed
Use the cheat code "94000130 fcff0000 220bce5d 0000000a d2000000 00000000" for maximum speed. Press "L" and "R" simultaneously to activate this code.
Max Fielding
Enter the cheat code "94000130 fcff0000 220bce5c 0000000a d2000000 00000000" for maximum fielding power. Press "L" and "R" simultaneously when fielding to activate the code.
Max Pitching
Get all of the best pitching stats with the code "94000130 fcff0000 220bce5b 0000000a d2000000 00000000." Press "L" and "R" simultaneously before you pitch to activate the code and increase your power.