CREATE TABLE table_68001 ("Date" CLOB, "Tournament" CLOB, "Winning score" CLOB, "Margin of victory" CLOB, "Runner ( s ) -up" CLOB)

When was the winning score 9 (72-68-64-67=271)?
SELECT "Date" FROM table_68001 WHERE "Winning score" = '−9 (72-68-64-67=271)'
SELECT "Date" FROM "table_68001" WHERE "Winning score" = '−9 (72-68-64-67=271)'