Bonus characters and court
 
 At the Smart Dog logo screen, press Up, Down, Left, Right, Start. If
 you entered the code correctly, you will hear a voice say "Yeah."
 Then, additional characters and the Canyon court will be available in
 "Smash Tennis" mode. -From: dj7672@mc2k.com
 
 Super backhand
 
 While playing a game, hold R1 + R2 and press X, Square, Circle,
 Square, X, Triangle. Then release R1 + R2, and press Select.
 
  Game Shark Codez:
 
               
  P1 Starts Off With A Score Of 40 
  D01CBF60 0000
  301CBF60 4040
               
  P1 Scores Always 00              
  301CBF60 4000
               
  P2 Always Has Super Special Shot 
  801CBDFC 000A