The following are known Gecko Codes for Backyard Sports: Sandlot Sluggers on Nintendo Wii (Wii).

Count 0-0-0 (1 Button) [ZiT]
28647F4A 00000200
48000000 8078369C
DE000000 80008180
4A100000 0000035C
14000000 00000000
14000004 00000000
14000008 00000000
E0000000 80008000

Count 0-2-2 (2 Button) [ZiT]
28647F4A 00000100
48000000 8078369C
DE000000 80008180
4A100000 0000035C
14000000 00000000
14000004 00000002
14000008 00000002
E0000000 80008000

Count 3-0-0 (1 and 2 Button) [ZiT]
28647F4A 00000300
48000000 8078369C
DE000000 80008180
4A100000 0000035C
14000000 00000003
14000004 00000000
14000008 00000000
E0000000 80008000

Score 99-00 (- Button) [ZiT]
28647F4A 00001000
040C2A90 38000063
040C2B08 38000000
E0000000 80008000

Score 00-99 (- and B Button) [ZiT]
28647F4A 00001400
040C2A90 38000000
040C2B08 38000063
E0000000 80008000