CREATE TABLE table_12720 ("Place" TEXT, "Player" TEXT, "Country" TEXT, "Score" TEXT, "To par" TEXT)

When Rocco Mediate of the United States has a To par of +2, what was his score?
SELECT "Score" FROM table_12720 WHERE "To par" = '+2' AND "Country" = 'united states' AND "Player" = 'rocco mediate'
SELECT "Score" FROM "table_12720" WHERE "Country" = 'united states' AND "Player" = 'rocco mediate' AND "To par" = '+2'