CREATE TABLE table_50665 ("Opposing Team" TEXT, "Against" FLOAT, "Date" TEXT, "Venue" TEXT, "Status" TEXT)

Sum of cuyo selection as the opposing team?
SELECT SUM("Against") FROM table_50665 WHERE "Opposing Team" = 'cuyo selection'
SELECT SUM("Against") FROM "table_50665" WHERE "Opposing Team" = 'cuyo selection'