Who is the runner(s)-up for a winning score of −3 (71-74-66-66=277)?
CREATE TABLE "pga_tour_wins_5" (
  "date" text,
  "tournament" text,
  "winning_score" text,
  "margin_of_victory" text,
  "runner_s_up" text
);
SELECT "runner_s_up" FROM "pga_tour_wins_5" WHERE "winning_score"='−3 (71-74-66-66=277)';