CREATE TABLE table_38520 ("Date" TEXT, "Tournament" TEXT, "Winning score" TEXT, "Margin of victory" TEXT, "Runner ( s ) -up" TEXT)

Which Margin of victory has a Runner(s)-up of mark o'meara?
SELECT "Margin of victory" FROM table_38520 WHERE "Runner(s)-up" = 'mark o''meara'
SELECT "Margin of victory" FROM "table_38520" WHERE "Runner(s)-up" = 'mark o\'meara'