Table: buffalo_bills_1961
Columns: week
date
opponent
result
stadium
record
attendance

Question: What opponent has balboa stadium as the opponent?
SQL: SELECT "opponent" FROM buffalo_bills_1961 WHERE "stadium" = 'balboa stadium'

Question: What is the highest attendance that has oakland raiders as the opponent, with a week greater than 9?
SQL: SELECT MAX("attendance") FROM buffalo_bills_1961 WHERE "opponent" = 'oakland raiders' AND "week" > 9