CREATE TABLE table_24625 ("Round" FLOAT, "Date" TEXT, "City and venue" TEXT, "Winner" TEXT, "Runner-up" TEXT, "3rd placed" TEXT, "4th placed" TEXT, "Results" TEXT)

Who was the runner-up on September 11?
SELECT "Runner-up" FROM table_24625 WHERE "Date" = 'September 11'
SELECT "Runner-up" FROM "table_24625" WHERE "Date" = 'September 11'