The following are known GameShark Codes for MLB 2002 on Sony Playstation (PS1).

• Master Code – Must Be On
  D00202D0 023A
  800202D2 1000
• Master Code – Must Be On (Different Version)
  D0020248 000A
  8002024A 1000
• Home Team Score Modifier
  3001D453 00??
• Home Team Hits Modifier
  3001D452 00??
• Home Team Error Modifier
  3001D454 00??
• Away Team Score Modifier
  3001D494 00??
• Away Team Hits Modifier
  3001D495 00??
• Away Team Error Modifier
  3001D496 00??
• Infinite Creation Points
  800F9242 2400
• Infinite Outs
  800BB8D4 0000
• 2 Outs And You Are Out
  D00BB8D4 0000
  800BB8D4 0001
• 1 Out And You Are Out
  D00BB8D4 0000
  800BB8D4 0002
• Infinite Strikes
  800BB8D6 0000
• 2 Strikes And You Are Out
  D00BB8D6 0000
  800BB8D6 0001
• 1 Strike And You Are Out
  D00BB8D6 0000
  800BB8D6 0002
• Infinite Balls
  800BB8D8 0000
• 3 Balls And You Walk
  D00BB8D8 0000
  800BB8D8 0001
• 2 Balls And You Walk
  D00BB8D8 0000
  800BB8D8 0002
• 1 Ball And You Walk
  D00BB8D8 0000
  800BB8D8 0003