CREATE TABLE table_50001 ("Year" FLOAT, "Championship" TEXT, "Winning score" TEXT, "Margin" TEXT, "Runner ( s ) -up" TEXT)

When was the most recent year that kathy whitworth was the runner-up?
SELECT MAX("Year") FROM table_50001 WHERE "Runner(s)-up" = 'kathy whitworth'
SELECT MAX("Year") FROM "table_50001" WHERE "Runner(s)-up" = 'kathy whitworth'