CREATE TABLE table_name_81 (losses NUMBER, wins VARCHAR2, league VARCHAR2, season VARCHAR2)

What is the losses in the NFL in the 2011 season with less than 13 wins?
SELECT AVG(losses) FROM table_name_81 WHERE league = "nfl" AND season = 2011 AND wins < 13
SELECT AVG("losses") FROM "table_name_81" WHERE "league" = "nfl" AND "season" = 2011 AND "wins" < 13