Enter these codes at the Ring Tournament selection under 
the Special games option. 

A3W5KQA3C Mario Cup 
UOUFMPUOM Wario Cup  
OF9XFQOFR Peach Cup  
M1C2YQM1W Luigi Cup  
LA98JRLAR Waluigi Cup  
MM55MQMMJ Donkey Kong Cup  
ARM6JQARU Blockbuster Cup  
N24K8QN2P Bowser Cup  
J6M9PQJ6U Nintendo Power Cup  
V2UFMPUZM IGN64 Cup  
48HWOR482 MarioTennis.com Cup