For those who'd like to play NBA 2k13 with autosave disabled, I believe I've been able to find the memory address.
Requirements:
- Cheat Engine
- Memory Address which I've added in a CH table (Attachment)
Values:
0 ----> Autosave Disabled
1 ----> Autosave Enabled
This should work on both My Career and Association saves/modes. Just keep in mind to manually save any file you're using after you've chosen to disable autosave. Leftos will probably add this in his Workaround Tool next week.