CREATE TABLE table_28455 ("Year" FLOAT, "Championship" TEXT, "54 holes" TEXT, "Winning score" TEXT, "Margin" TEXT, "Runner ( s ) -up" TEXT)

what is the number where the player was jimmy demaret
SELECT "54 holes" FROM table_28455 WHERE "Runner(s)-up" = 'Jimmy Demaret'
SELECT "54 holes" FROM "table_28455" WHERE "Runner(s)-up" = 'Jimmy Demaret'