CREATE TABLE table_17936 ("Year" TEXT, "Championship" TEXT, "54 holes" TEXT, "Winning score" TEXT, "Margin" TEXT, "Runner ( s ) -up" TEXT)

What championship had a margin of playoff 2?
SELECT "Championship" FROM table_17936 WHERE "Margin" = 'Playoff 2'
SELECT "Championship" FROM "table_17936" WHERE "Margin" = 'Playoff 2'