CREATE TABLE table_15951 ("Pick" FLOAT, "Player" TEXT, "Position" TEXT, "Nationality" TEXT, "NHL team" TEXT, "College/junior/club team" TEXT)

All players are position mark polak.
SELECT "Position" FROM table_15951 WHERE "Player" = 'Mark Polak'
SELECT "Position" FROM "table_15951" WHERE "Player" = 'Mark Polak'