The following are known Action Replay MAX Codes for Outlaw Tennis on Sony Playstation 2 (PS2).

Device Compatibility: Action Replay MAX

• Master Code – Must Be On
  WUA9-01DQ-6ZY7J
  V144-Z8PP-80B73
  H09G-QYQE-E3KTD
  P7C5-RMVP-F4D0P
  Z1M0-KUTN-V1FZF
• Infinite Skill Points
  K8BP-KRCZ-84Z37
  BUVN-PBCH-WVPJP
• Player 1 Always Wins
  9Y88-UJMB-QJ6TT
  HQHA-3K7N-9AK2Z
  NNQW-FDXC-6XR8W
  Y0K1-HWUB-NEM0Z
• Unlock All Drills
  APU8-AZ28-1585R
  R4A4-KJXH-52AZ1
  8CXT-FRBJ-83RC5