CREATE TABLE table_33913 ("Year" FLOAT, "Championship" TEXT, "Winning score" TEXT, "Margin" TEXT, "Runner ( s ) -up" TEXT)

What Championship had a Winning score of 6 & 5?
SELECT "Championship" FROM table_33913 WHERE "Winning score" = '6 & 5'
SELECT "Championship" FROM "table_33913" WHERE "Winning score" = '6 & 5'