What player placed t6 for the United States with a score of 67-69=136?
CREATE TABLE "second_round" (
  "place" text,
  "player" text,
  "country" text,
  "score" text,
  "to_par" text
);
SELECT "player" FROM "second_round" WHERE "country"='united states' AND "place"='t6' AND "score"='67-69=136';