CREATE TABLE table_8318 ("Week" FLOAT, "Date" TEXT, "Opponent" TEXT, "Result" TEXT, "Attendance" TEXT)

What was the Opponent before Week 11 with an Attendance of 63,571?
SELECT "Opponent" FROM table_8318 WHERE "Week" < '11' AND "Attendance" = '63,571'
SELECT "Opponent" FROM "table_8318" WHERE "Attendance" = '63,571' AND "Week" < '11'