CREATE TABLE table_48745 ("Place" TEXT, "Player" TEXT, "Country" TEXT, "Score" TEXT, "To par" TEXT)

What is the to par of Al Mengert of the United States?
SELECT "To par" FROM table_48745 WHERE "Country" = 'united states' AND "Player" = 'al mengert'
SELECT "To par" FROM "table_48745" WHERE "Country" = 'united states' AND "Player" = 'al mengert'