CREATE TABLE table_13157 ("Opposing Teams" TEXT, "Against" FLOAT, "Date" TEXT, "Venue" TEXT, "Status" TEXT)

What's the against on 17/01/1976?
SELECT MIN("Against") FROM table_13157 WHERE "Date" = '17/01/1976'
SELECT MIN("Against") FROM "table_13157" WHERE "Date" = '17/01/1976'