The following are known Game Genie Codes for Roger Clemens’ MVP Baseball on Nintendo Entertainment System (NES).

• 2 Strikes And You’re Out
  ZANEAPLA
  ZEOUYPLA
  ZEVKGPLA
• 1 Strike And You’re Out
  PANEAPLA
  PEOUYPLA
  PEVKGPLA
• Strikes Are Not Called When Batter Doesn’t Swing
  OOVSLLPA
• Strikes Are Not Called When Batter Swings
  GANAAPZA
• 1 Ball For A Walk
  PENKLPGA
• 2 Balls For A Walk
  ZENKLPGA
• 3 Balls For Walk
  LENKLPGA
• Infinite Balls (Balls Are Not Called)
  OONIALAA
• Infinite Balls And Strikes
  SLNALPVY