Virtua Tennis

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.
Information in this section was contributed by Kimani.

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.
Information in this section was contributed by KrAzIeHaSe.

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

Alternate view:
Press A + Y while your opponent serves to change the view to behind you and zoomed in. Press A + Y to return to normal view.
Information in this section was contributed by
Information in this section was contributed by RDoden3071.

Hint: Defeating the CPU:
If you are on offense, just serve. After the CPU hits it back, your player should move on his own. Press A and your player should hit the ball back. If on defense, do not hit anything until your player moves to the ball. After the CPU serves, just press A.
Information in this section was contributed by William Patch.

Hint: Easy doubles win:
Use the following trick to win any game in two player doubles. You can win every match 40-0, on any difficulty setting.
Information in this section was contributed by -=PP=-superbeast.

If you are not serving: When the CPU serves just hit it back at them, but let one play go up by the net. When the CPU hits it back, have the player that went up to the net stand in the middle on the crease. You can hit the ball from here. It is a glitch, the CPU cannot hit it back once the player by the net hits it

If you are serving: Have one player stand in the middle of the net up close as described above. Serve the ball. When the CPU hits it back, the one from the net should tap it back. The CPU cannot get it. In both cases (you are or are not serving), have the player that is not by the net ready, in case this does not work.