สัปดาห์ใดคือเกมกับ San Diego Chargers?ไม่จำเป็นต้องใช้ตารางทั้งหมด
Which week was the game against the San Diego Chargers?It is not neccessary to use all the tables.
 table_name_91:  (week [ VARCHAR ] opponent [ VARCHAR) ]
SELECT week FROM table_name_91 WHERE opponent = "san diego chargers"