CREATE TABLE table_19847 ("No." FLOAT, "Date" TEXT, "Tournament" TEXT, "Winning score" TEXT, "To par" TEXT, "Margin of victory" TEXT, "Runner-up" TEXT)

Who are all runner-ups for No. 2?
SELECT "Runner-up" FROM table_19847 WHERE "No." = '2'
SELECT "Runner-up" FROM "table_19847" WHERE "No." = '2'