CREATE TABLE table_17710 ("Club" TEXT, "Overall Record" TEXT, "Goals For" FLOAT, "Goals For Avg." TEXT, "Goals Against" FLOAT, "Goals Against Avg." TEXT)

D.C. United had a 9-14-5 record and what goals against avg.?
SELECT "Goals Against Avg." FROM table_17710 WHERE "Overall Record" = '9-14-5'
SELECT "Goals Against Avg." FROM "table_17710" WHERE "Overall Record" = '9-14-5'