CREATE TABLE table_9071 ("Week" FLOAT, "Date" TEXT, "Opponent" TEXT, "Result" TEXT, "Attendance" TEXT)

Which opponent has a week smaller than 15, and a Result of l 23-17?
SELECT "Opponent" FROM table_9071 WHERE "Week" < '15' AND "Result" = 'l 23-17'
SELECT "Opponent" FROM "table_9071" WHERE "Result" = 'l 23-17' AND "Week" < '15'