CREATE TABLE table_23990 ("Round" FLOAT, "Pick #" FLOAT, "Player" TEXT, "Position" TEXT, "Height" TEXT, "Weight" TEXT, "College" TEXT, "Status" TEXT)

how many players played running back where status is made 53-man roster at start of 2009 season
SELECT COUNT("Player") FROM table_23990 WHERE "Status" = 'Made 53-man roster at start of 2009 season' AND "Position" = 'Running back'
SELECT COUNT("Player") FROM "table_23990" WHERE "Position" = 'Running back' AND "Status" = 'Made 53-man roster at start of 2009 season'