CREATE TABLE table_13053 ("Opposing Teams" TEXT, "Against" FLOAT, "Date" TEXT, "Venue" TEXT, "Status" TEXT)

What is the total against on 15/10/1999?
SELECT SUM("Against") FROM table_13053 WHERE "Date" = '15/10/1999'
SELECT SUM("Against") FROM "table_13053" WHERE "Date" = '15/10/1999'