CREATE TABLE table_67762 ("Year" FLOAT, "Pick" TEXT, "Player name" TEXT, "College" TEXT, "Position" TEXT)

Which lowest year has a Position of rb, and a College of louisiana state?
SELECT MIN("Year") FROM table_67762 WHERE "Position" = 'rb' AND "College" = 'louisiana state'
SELECT MIN("Year") FROM "table_67762" WHERE "College" = 'louisiana state' AND "Position" = 'rb'