CREATE TABLE table_28457 ("Year" FLOAT, "Championship" TEXT, "54 holes" TEXT, "Winning score" TEXT, "Margin" TEXT, "Runner ( s ) -up" TEXT)

what is the space where the next winner is skee riegel
SELECT "Margin" FROM table_28457 WHERE "Runner(s)-up" = 'Skee Riegel'
SELECT "Margin" FROM "table_28457" WHERE "Runner(s)-up" = 'Skee Riegel'