CREATE TABLE table_20498 ("No." FLOAT, "Date" CLOB, "Tournament" CLOB, "Winning score" CLOB, "To par" CLOB, "Margin of victory" CLOB, "Runner ( s ) -up" CLOB)

What was the margin of victory with the winning score '63-68-68-68=267'?
SELECT "Margin of victory" FROM table_20498 WHERE "Winning score" = '63-68-68-68=267'
SELECT "Margin of victory" FROM "table_20498" WHERE "Winning score" = '63-68-68-68=267'