CREATE TABLE table_68587 ("Season" FLOAT, "Men's singles" CLOB, "Women's singles" CLOB, "Men's doubles" CLOB, "Women's doubles" CLOB, "Mixed doubles" CLOB)

Who won mixed doubles in the 2002 season?
SELECT "Mixed doubles" FROM table_68587 WHERE "Season" = '2002'
SELECT "Mixed doubles" FROM "table_68587" WHERE "Season" = '2002'