CREATE TABLE table_2508633_4 (pick__number VARCHAR, college VARCHAR, player VARCHAR)

What number draft pick was Oklahoma State's Greg Hill in 1983?
SELECT pick__number FROM table_2508633_4 WHERE college = "Oklahoma State" AND player = "Greg Hill"
SELECT "pick__number" FROM "table_2508633_4" WHERE "Greg Hill" = "player" AND "Oklahoma State" = "college"