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

• Outs Not Counted Except Strikeouts
  009 76C 19A
• Can’t Walk
  00A C1E 19A
• 1 Ball And You Walk
  01A C3E F7A
• 6 Balls And You Walk
  06A C3E F7A
• 9 Balls And You Walk
  09A C3E F7A
• No Strikeouts
  00A 37E 19A
• 1 Strike And You’re Out
  01A 39E E66
• 6 Strikes And You’re Out
  06A 39E E66
• 9 Strikes And You’re Out
  09A 39E E66