Unlockable: Tank Racket:
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Complete Tank Training at least until level 4 and you’ll get Tank Racket.
Unlockable: Alien Force Racket:
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Complete level 4 of Alien Force Volley Training.
Unlock Lleyton Hewit & Marat Safin:
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In main menu press L1, R1, L1, R1, O, O, O, Up, Up, Up, Down, Down, Down.
Unlock King or Queen:
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To unlock King or Queen, win all the game in Arcade Mode without using
continue. If you’re a man, you’ll face the King, if you’re a girl, you’ll
face the Queen. Beat them.
Unlock King’s Court:
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To unlock King’s Court, beat King and Queen in Mixed Doubles, in World
Tour Mode (level 5).