When was –16 (62-71-71-68=272) the winning score?
CREATE TABLE "pga_tour_wins_25" (
  "date" text,
  "tournament" text,
  "winning_score" text,
  "margin_of_victory" text,
  "runner_s_up" text
);
SELECT "date" FROM "pga_tour_wins_25" WHERE "winning_score"='–16 (62-71-71-68=272)';