CREATE TABLE table_name_73 (set_2 VARCHAR(255), set_1 VARCHAR(255), score VARCHAR(255), date VARCHAR(255))
What is Set 2, when Score is 3-0, when Date is May 11, and when Set 1 is 25-20?
    
SQL: SELECT set_2 FROM table_name_73 WHERE score = "3-0" AND date = "may 11" AND set_1 = "25-20"