CREATE TABLE table_64318 ("Round" TEXT, "Date" TEXT, "Opponent" TEXT, "Venue" TEXT, "Result" TEXT, "Attendance" TEXT, "Report" TEXT)

Who was the opponent with an attendance of 628?
SELECT "Opponent" FROM table_64318 WHERE "Attendance" = '628'
SELECT "Opponent" FROM "table_64318" WHERE "Attendance" = '628'