What was the margin of victory when Mark Calcavecchia was the runner-up?
CREATE TABLE "champions_tour_wins_9" (
  "date" text,
  "tournament" text,
  "winning_score" text,
  "margin_of_victory" text,
  "runner_s_up" text
);
SELECT "margin_of_victory" FROM "champions_tour_wins_9" WHERE "runner_s_up"='mark calcavecchia';