Friday, December 10, 2021 ratings — New episodes: Shark Tank, 20/20, The Wall, Dateline NBC, SWAT, Magnum PI, Blue Bloods, Dateline NBC, Penn & Teller: Fool Us, and Nancy Drew. Special: Penn & Teller: Merry Fool Us. Sports: Friday Night Smackdown. Reruns: (none).
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These are the fast affiliate ratings. The percentages represent the change since the previous original episode. (Percentages aren’t given for reruns or specials.) To see past ratings for a particular show, click the show’s link. The show pages are updated with the daily final ratings when they become available. Those pages include season averages to date.
What were you watching last night? Original network programming, reruns, cable, or something else?