user: Question: Which opponent, before Week 10, had an attendance of 63,672?
Columns: ['Week', 'Date', 'Opponent', 'Result', 'Attendance']
Types: ['real', 'text', 'text', 'text', 'text']
Sample row: [1.0, 'September 9, 1990', 'Pittsburgh Steelers', 'W 13–3', '78,298']
SQL:

assistant: SELECT "Opponent" FROM "Table" WHERE "Week" < 10.0 AND "Attendance" = '63,672';