Unlockable Characters
     You  can  unlock  the following characters by playing Arcade Mode 
(on Easy or Hard).

Boris Becker:  Beat Arcade Mode with any character with no points lost. 
               Defeat Becker in the Secret Tournament.

Tim Henman:    Beat Arcade Mode with no points lost. 
               Defeat Henman in the Secret Tournament.

Duke:          Win the King of Players tournament and defeat Duke.

King:          Win the King of Players tournament twice and defeat King.

Stefan Edberg: Complete Arcade Mode in Doubles.