CREATE TABLE table_39213 ("Round" FLOAT, "Pick #" FLOAT, "Overall" FLOAT, "Name" TEXT, "Position" TEXT, "College" TEXT)

What is the highest pick number of a defensive back with less than 136 overall points?
SELECT MAX("Pick #") FROM table_39213 WHERE "Overall" < '136' AND "Position" = 'defensive back'
SELECT MAX("Pick #") FROM "table_39213" WHERE "Overall" < '136' AND "Position" = 'defensive back'