CREATE TABLE table_name_84 (date VARCHAR, opponent_in_the_final VARCHAR)

What date did Namigata play against Wen-Hsin Hsu in the finals?
SELECT date FROM table_name_84 WHERE opponent_in_the_final = "wen-hsin hsu"
SELECT "date" FROM "table_name_84" WHERE "opponent_in_the_final" = "wen-hsin hsu"