CREATE TABLE table_70651 ("Date" TEXT, "Opponent" TEXT, "Score" TEXT, "Loss" TEXT, "Attendance" FLOAT, "Record" TEXT)

How low is the Attendance that has an Opponent of devil rays and a Date of may 13?
SELECT MIN("Attendance") FROM table_70651 WHERE "Opponent" = 'devil rays' AND "Date" = 'may 13'
SELECT MIN("Attendance") FROM "table_70651" WHERE "Date" = 'may 13' AND "Opponent" = 'devil rays'