Thursday, September 20, 2018 ratings — New episodes: Big Brother.  Reruns: The Big Bang Theory, Young Sheldon, SWAT, Grey’s Anatomy, Station 19, How to Get Away with Murder, The Good Place, Law & Order: SVU, The Gifted Supernatural, and The Originals.

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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?