This is hard to believe but I just looked it up. "Georgia's matchup Saturday over the formerly No. 1 ranked Tennessee Volunteers was seen by 13.3 million people according to CBSsports, the most watched football game of the season. In comparison, the NU vs OK 1971 Game-With a kickoff shortly before 3 pm EST, ABC-TV broadcast the game nationally to an estimated 55 million viewers (at the time the largest television audience ever for a college football game)."