CREATE TABLE table_name_13 (byes INT, losses VARCHAR, wins VARCHAR)

What is the average number of Byes for the team that had 15 Losses, and less than 1 Win?
SELECT AVG(byes) FROM table_name_13 WHERE losses = 15 AND wins < 1
SELECT AVG("byes") FROM "table_name_13" WHERE "losses" = 15 AND "wins" < 1