In what week was the Result L 15-13?
CREATE TABLE table_name_91 (week INTEGER, result VARCHAR)
SELECT AVG(week) FROM table_name_91 WHERE result = "l 15-13"
### Context: CREATE TABLE table_name_91 (week INTEGER, result VARCHAR) ### Question: In what week was the Result L 15-13? ### Answer: SELECT AVG(week) FROM table_name_91 WHERE result = "l 15-13"