CREATE TABLE table_73242 ("Player" TEXT, "Australian Open" FLOAT, "French Open" FLOAT, "Wimbledon" FLOAT, "US Open" FLOAT)

When did Shirley Fry Irvin win the US Open?
SELECT MIN("US Open") FROM table_73242 WHERE "Player" = 'Shirley Fry Irvin'
SELECT MIN("US Open") FROM "table_73242" WHERE "Player" = 'Shirley Fry Irvin'