CREATE TABLE table_40920 ("Game" FLOAT, "Date" CLOB, "Set 1" CLOB, "Set 2" CLOB, "Set 3" CLOB, "Set 4" CLOB, "Set 5" CLOB, "Result  ( sets ) " CLOB, "Result  ( Pts ) " CLOB)

What day was there a set 1 of 25-18?
SELECT "Date" FROM table_40920 WHERE "Set 1" = '25-18'
SELECT "Date" FROM "table_40920" WHERE "Set 1" = '25-18'