The following are known Game Genie Codes for World Series Baseball on SEGA Genesis.

• One Ball For A Walk
  AFCV-CAFC
• 8 Balls For A Walk 1
  BBCV-CAFC
• One Strike For An Out
  AFDB-CABA
• Unlimited Outs
  AKDB-CA7A
• Player 1 starts with 1 Run<
  HENA-DEYN
• Player 1 starts with 2 Runs
  HENA-DJYN
• Player 1 starts with 3 Runs
  HENA-DNYN
• Player 1 starts with 4 Runs
  HENA-DTYN
• Player 1 starts with 5 Runs
  HENA-DYYN
• Player 1 starts with 6 Runs
  HENA-D2YN
• Player 1 starts with 7 Runs
  HENA-D6YN
• Player 1 starts with 8 Runs
  HENA-DAYN
• Player 2 starts with 1 Run
  HENA-DEZE
• Player 2 starts with 2 Runs
  HENA-DJZE
• Player 2 starts with 3 Runs
  HENA-DNZE
• Player 2 starts with 4 Runs
  HENA-DTZE
• Player 2 starts with 5 Runs
  HENA-DYZE
• Player 2 starts with 6 Runs
  HENA-D2ZE
• Player 2 starts with 7 Runs
  HENA-D6ZE
• Player 2 starts with 8 Runs
  HENA-DAZE