บรองโกส์เล่นกับทีมต่างๆ กี่ทีม ?ไม่จำเป็นที่จะต้องใช้โต๊ะทั้งหมด
how many different teams did the broncos play against ?It is not neccessary to use all the tables.
 table_203_371:  id [ number]  "round" [ number]  "opponent" [ text]  "result" [ text]  "bro." [ number]  "opp." [ number]  "date" [ text]  "venue" [ text]  "crowd" [ number]  "position" [ text] 
SELECT COUNT(DISTINCT "opponent") FROM table_203_371