CREATE TABLE table_15892 ("Player" CLOB, "Years Played" CLOB, "Total W-L" CLOB, "Singles W-L" CLOB, "Doubles W-L" CLOB)

what's the total number of singles w-l with doubles w-l of 0 0 and total w-l of 3 1
SELECT COUNT("Singles W-L") FROM table_15892 WHERE "Doubles W-L" = '0–0' AND "Total W-L" = '3–1'
SELECT COUNT("Singles W-L") FROM "table_15892" WHERE "Doubles W-L" = '0–0' AND "Total W-L" = '3–1'