CREATE TABLE table_80301 ("Year" TEXT, "Winner" TEXT, "Country" TEXT, "Score" TEXT, "Margin" TEXT, "Runner ( s ) -up" TEXT)

Who was the runner-up when the margin was 1 stroke?
SELECT "Runner(s)-up" FROM table_80301 WHERE "Margin" = '1 stroke'
SELECT "Runner(s)-up" FROM "table_80301" WHERE "Margin" = '1 stroke'