What tournament had a Winning score of –9 (69-72-68-70=279)?
CREATE TABLE "pga_tour_wins_13" (
  "date" text,
  "tournament" text,
  "winning_score" text,
  "margin_of_victory" text,
  "runner_s_up" text
);
SELECT "tournament" FROM "pga_tour_wins_13" WHERE "winning_score"='–9 (69-72-68-70=279)';