CREATE TABLE table_63164 ("Game" TEXT, "Date" TEXT, "Opponent" TEXT, "Score" TEXT, "Location/Attendance" TEXT, "Record" TEXT)

Who was the opponent when the record was 31-24?
SELECT "Opponent" FROM table_63164 WHERE "Record" = '31-24'
SELECT "Opponent" FROM "table_63164" WHERE "Record" = '31-24'