The big LSU-Alabama game averaged 20.011 million viewers on Saturday night, making it CBS’ most-watched regular season college football game in 22 years. The game, which aired in primetime on the East Coast, pitted the No. 1 and No. 2 teams in the national rankings and came down to an overtime field goal that gave top-ranked LSU a 9-6 victory on the road. The ratings — viewership spiked to 24.3 million during the tense final minutes, and the average fast-national rating/share was 11.5/20 — were particularly impressive considering that at its core this is a regional game, as LSU and Alabama are rivals in the Southeastern Conference.