CREATE TABLE table_74728 ("Date" CLOB, "Tournament" CLOB, "Winning score" CLOB, "Margin of victory" CLOB, "Runner ( s ) -up" CLOB)

What was the winning score when there were 9 strokes advantage?
SELECT "Winning score" FROM table_74728 WHERE "Margin of victory" = '9 strokes'
SELECT "Winning score" FROM "table_74728" WHERE "Margin of victory" = '9 strokes'