CREATE TABLE table_31769 ("Week" FLOAT, "Date" CLOB, "Opponent" CLOB, "Result" CLOB, "Attendance" CLOB)

Tell me the opponent for attendance of 53,899
SELECT "Opponent" FROM table_31769 WHERE "Attendance" = '53,899'
SELECT "Opponent" FROM "table_31769" WHERE "Attendance" = '53,899'