What is the round of 54 holes in which Phil Mickelson was the runner-up?
CREATE TABLE "wins_14" (
  "year" real,
  "championship" text,
  "54_holes" text,
  "winning_score" text,
  "margin" text,
  "runner_s_up" text
);
SELECT "54_holes" FROM "wins_14" WHERE "runner_s_up"='phil mickelson';