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Friday, March 31, 2023 ratings — New episodes: Whose Line Is It Anyway?, The Great American Joke Off, Penn & Teller: Fool Us, SWAT, Fire Country, Blue Bloods, Shark Tank, 20/20, Dateline NBC, Lopez vs. Lopez, and Grand Crew.  Sports: WWE 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 final daily 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?