How to get King and Master
First to get King you have to beat all normal matches and all training games in world circuit to unlock a level 4 match against King After you beat him youll unlock a doubles match against King and Master After you beat that final match youll get King to use in arcade and exhibition matches To get Master you must play arcade mode on very hard might be able to get on normal also not sure I only play very hard and win every single game and set straight through you cannot lose any games or matches if you do it will not work After you beat the last guy youll see your character celebrate and then it will say new challenger it will be Master Beat him and youll now be able to use Master in arcade and exhibition modes To make this easier you can put the amount of games on 1 the number doesnt make a difference on the amount of money you get or affect facing Master after the last guy Heres a few pointers on Master first he doesnt have 150mph serves like King but hell throw you some tricky serves that go slower then they look just be ready to move up on them and swing do that and youll have really no problem beating him hes not really harder then most of the other characters as long as you dont make bad shots which hell burn you on as for King the only real problem with him is the 150mph serves you just have to be real fast and judge it very good and move up on it at the right time other then that hes easier then Master to beat
Play against Master and King
Successfully complete arcade mode using no continues and without losing a round on the normal difficulty setting to play against Master in singles and Master and King in doubles This can be easily done if the match is set to one round
Underarm serve
To do an underarm serve press A X Down while at near court or A X Up while at far court