CREATE TABLE "final_round" (
  "place" text,
  "player" text,
  "country" text,
  "score" text,
  "to_par" text,
  "money" real
);

Question: Which country is t3 finisher billy mayfair from?
SQL: SELECT "country" FROM "final_round" WHERE "place"='t3' AND "player"='billy mayfair';