CREATE TABLE table_7508 ("Week" FLOAT, "Date" CLOB, "Opponent" CLOB, "Result" CLOB, "Location" CLOB, "Record" CLOB, "Attendance" CLOB)

Who was the opponent the Buffalo Bills played when their record was 4-4?
SELECT "Opponent" FROM table_7508 WHERE "Record" = '4-4'
SELECT "Opponent" FROM "table_7508" WHERE "Record" = '4-4'