Question: What margin was in after 1981, and was Roberto De Vicenzo runner-up?
SQL: SELECT "Margin" FROM "2-1552405-6" WHERE "Year" > 1981.0 AND "Runner(s)-up" = 'Roberto De Vicenzo';

Question: What championship was in 1985?
SQL: SELECT "Championship" FROM "2-1552405-6" WHERE "Year" = 1985.0;