CREATE TABLE table_7221 ("Date" CLOB, "Tournament" CLOB, "Winning score" CLOB, "Margin of victory" CLOB, "Runner ( s ) -up" CLOB)

What was the winning score for the tournament where Garth Mulroy was the runner-up, and the margin of victory was 1 stroke?
SELECT "Winning score" FROM table_7221 WHERE "Margin of victory" = '1 stroke' AND "Runner(s)-up" = 'garth mulroy'
SELECT "Winning score" FROM "table_7221" WHERE "Margin of victory" = '1 stroke' AND "Runner(s)-up" = 'garth mulroy'