Virtua Tennis 4 [Wii]

Duke
Successfully complete Arcade mode without losing a game as a male tennis player. Instead of an exhibition match appearing at the end Arcade mode, a special match message will appear. You will face Duke. Defeat him to unlock him as a selectable character.

Play "The King":
In World Tour Mode, complete the fourth toure with over 750 stars (Ultimate Star ranking) to be invited to a special bonus tour. Included in this tour is an incredibly difficult match against a well dressed Brit in a regal, baroque
style ballroom/tennis court.

Maximum Score for Arcade Mode hint:
In Arcade mode, your score is based on how many points you score on your opponent. Kicking your opponent's butt will actually earn you less points than if you force a deuce (tied 40-40) and keep going back and forth for as long as possible.

Tennisman!:
After you reach the ranking of Tennis Hero (600 stars), you unlock a t-shirt of a tennis playing super hero, Tennisman. If you win a tournament while wearing the shirt, Tennisman himself will send you fan mail.