user: Question: Who was the opponent the Buffalo Bills played when their record was 4-4?
Columns: ['Week', 'Date', 'Opponent', 'Result', 'Location', 'Record', 'Attendance']
Types: ['real', 'text', 'text', 'text', 'text', 'text', 'text']
Sample row: [1.0, 'September 3, 2000', 'Tennessee Titans', 'W 16–13', 'Ralph Wilson Stadium', '1-0', '72,492']
SQL:

assistant: SELECT "Opponent" FROM "Table" WHERE "Record" = '4-4';