CREATE TABLE table_10023387_1 (singles_w_l VARCHAR, doubles_w_l VARCHAR, total_w_l VARCHAR)

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_10023387_1 WHERE doubles_w_l = "0–0" AND total_w_l = "3–1"
SELECT COUNT("singles_w_l") FROM "table_10023387_1" WHERE "0–0" = "doubles_w_l" AND "3–1" = "total_w_l"