Virtua Tennis Codes -

Play against Master and King:
Successfully complete the game using no continues and without losing a round under the normal difficulty setting to play against Master in singles and Master and King in doubles in arcade mode. This can be easily done if the match is set to one round.

Play as Master:
Defeat Master in singles matches in arcade mode. Master may now be selected in arcade and training modes.

Play as King:
Unlock Master as a playable character. Then, defeat Master and King in doubles matches in arcade mode. King may now be selected in arcade and training modes. Alternately, successfully complete all 22 trial and 24 training levels in world circuit mode.

Special costumes:
Complete the level 3 training missions in world circuit mode before the timer turns red. In the last ten seconds of the challenge, the timer will turn red from yellow. Complete it while it is still yellow and you will unlock special costumes.

Underarm serves:
Press A + X + Down at near court or A + X + Up while at far court.