Primetime Preliminary Fast National Nielsen Data
(includes all DVR playback through 3:00 am)

Here are the highlights of the 16 ad-sustained programs that aired in primetime on the broadcast networks last night (4/15/21):

ABC (4.412 million viewers, #1; adults 18-49: 0.7, #1) was the top draw on Thursday thanks to its trio of "Station 19" (4.876 million viewers, #4; adults 18-49: 0.7, #T3), "Grey's Anatomy" (4.838 million viewers, #5; adults 18-49: 0.9, #1) and "Rebel" (3.522 million viewers, #9; adults 18-49: 0.5, #T8).

NBC (3.996 million viewers, #3; adults 18-49: 0.6, #2) was a close second with its lineup of "Manifest" (3.214 million viewers, #10; adults 18-49: 0.5, #T8), "Law & Order: Special Victims Unit" (4.522 million viewers, #6; adults 18-49: 0.8, #2) and "Law & Order: Organized Crime" (4.251 million viewers, #7; adults 18-49: 0.6, #T6).

Next up was CBS (4.195 million viewers, #2; adults 18-49: 0.5, #T3) and its mix of "Young Sheldon" (7.131 million viewers, #1; adults 18-49: 0.7, #T3), "United States of Al" (5.294 million viewers, #2; adults 18-49: 0.5, #T8), "Mom" (5.254 million viewers, #3; adults 18-49: 0.6, #T6), "B Positive" (3.982 million viewers, #8; adults 18-49: 0.5, #T8) and a repeat "Clarice" (1.754 million viewers, #13; adults 18-49: 0.2, #T14).

Meanwhile, FOX (2.243 million viewers, #4; adults 18-49: 0.5, #T3) served up new episodes of "Hell's Kitchen" (2.708 million viewers, #11; adults 18-49: 0.7, #T3), "Last Man Standing" (2.395 million viewers, #12; adults 18-49: 0.4, #12) and "The Moodys" (1.161 million viewers, #14; adults 18-49: 0.3, #13).

And finally, fresh installments from "Walker" (1.148 million viewers, #15; adults 18-49: 0.2, #T14) and "Legacies" (0.538 million viewers, #16; adults 18-49: 0.1, #16) rounded out the night on The CW (0.843 million viewers, #5; adults 18-49: 0.2, #5).

Week-to-week changes (adults 18-49):
+25.00% - B Positive
0.00% - Grey's Anatomy
0.00% - Young Sheldon
0.00% - Station 19
0.00% - Hell's Kitchen
0.00% - Mom
0.00% - Rebel
0.00% - Manifest
0.00% - Last Man Standing
0.00% - The Moodys
0.00% - Walker
0.00% - Legacies
-11.11% - Law & Order: Special Victims Unit
-16.67% - United States of Al
-25.00% - Law & Order: Organized Crime

Year-to-year changes (adults 18-49):
+100.00% - Walker (vs. Katy Keene)
+60.00% - Law & Order: Special Victims Unit (vs. Will & Grace/Indebted)
+27.27% - Hell's Kitchen (vs. Last Man Standing/Last Man Standing (Repeat))
0.00% - Last Man Standing (vs. Mental Samurai (Repeat))
0.00% - Legacies (vs. In the Dark)
-14.29% - Law & Order: Organized Crime (vs. Law & Order: Special Victims Unit)
-16.67% - Rebel (vs. How to Get Away with Murder)
-16.67% - Manifest (vs. Superstore (Repeat)/Brooklyn Nine-Nine)
-25.00% - Mom
-25.00% - The Moodys (vs. Mental Samurai (Repeat))
-28.57% - B Positive (vs. Broke)
-28.57% - United States of Al (vs. Man with a Plan)
-30.00% - Young Sheldon
-30.77% - Grey's Anatomy (vs. Station 19)
-73.08% - Station 19 (vs. The Disney Family Singalong)

Here are the highlights of the 18 ad-sustained programs that aired in primetime on the broadcast networks one year ago (4/16/20):

ABC (6.783 million viewers, #1; adults 18-49: 1.5, #1) got a huge boost on Thursday thanks to "The Disney Family Singalong" (10.303 million viewers, #1; adults 18-49: 2.6, #1) followed by new episodes of "Station 19" (6.994 million viewers, #4; adults 18-49: 1.3, #2) and "How to Get Away with Murder" (3.051 million viewers, #10; adults 18-49: 0.6, #T8).

CBS (6.500 million viewers, #2; adults 18-49: 0.7, #2) was a distant second with new episodes of "Young Sheldon" (9.321 million viewers, #2; adults 18-49: 1.0, #3), "Man with a Plan" (6.571 million viewers, #5; adults 18-49: 0.7, #T5), the season finale of "Mom" (7.123 million viewers, #3; adults 18-49: 0.8, #4), "Broke" (5.582 million viewers, #6; adults 18-49: 0.7, #T5) and "Tommy" (5.202 million viewers, #7; adults 18-49: 0.5, #T13).

Next up was NBC (2.831 million viewers, #3; adults 18-49: 0.6, #3) and its lineup of a repeat "Superstore" (2.714 million viewers, #11; adults 18-49: 0.6, #T8) alongside new episodes of "Brooklyn Nine-Nine" (2.214 million viewers, #14; adults 18-49: 0.6, #T8), "Will & Grace" (2.456 million viewers, #13; adults 18-49: 0.6, #T8), "Indebted" (1.567 million viewers, #16; adults 18-49: 0.4, #T15) and "Law & Order: Special Victims Unit" (4.019 million viewers, #8; adults 18-49: 0.7, #T5).

Meanwhile, FOX (2.465 million viewers, #4; adults 18-49: 0.5, #4) offered up a new "Last Man Standing" (3.824 million viewers, #9; adults 18-49: 0.6, #T8) plus repeats of "Last Man Standing" (2.696 million viewers, #12; adults 18-49: 0.5, #T13) and "Mental Samurai" (1.669 million viewers, #15; adults 18-49: 0.4, #T15).

And finally, a new "Katy Keene" (0.526 million viewers, #17; adults 18-49: 0.1, #T17) and the return of "In the Dark" (0.411 million viewers, #18; adults 18-49: 0.1, #T17) closed out the night on The CW (0.469 million viewers, #5; adults 18-49: 0.1, #5).

Week-to-week changes (adults 18-49):
+33.33% - Indebted
+16.67% - Law & Order: Special Victims Unit (vs. 4/2/20)
0.00% - Station 19
0.00% - Broke
0.00% - Last Man Standing
0.00% - How to Get Away with Murder
0.00% - Will & Grace
0.00% - Brooklyn Nine-Nine
0.00% - Katy Keene (vs. 3/26/20)
-12.50% - Man with a Plan
-16.67% - Tommy
-20.00% - Mom (vs. 4/2/20)
-23.08% - Young Sheldon (vs. 4/2/20)

Year-to-year changes (adults 18-49):
+116.67% - The Disney Family Singalong (vs. Grey's Anatomy)
+44.44% - Station 19
+40.00% - Law & Order: Special Victims Unit (vs. Law & Order: Special Victims Unit (Repeat))
+20.00% - How to Get Away with Murder (vs. For the People)
+20.00% - Will & Grace (vs. Brooklyn Nine-Nine)
+20.00% - Brooklyn Nine-Nine (vs. AP Bio)
0.00% - Indebted (vs. Abby's)
0.00% - Last Man Standing (vs. Gotham)
-12.50% - Broke (vs. Life in Pieces)
-20.00% - Mom
-30.00% - Man with a Plan (vs. Life in Pieces)
-37.50% - Tommy (vs. SWAT)
-44.44% - Young Sheldon (vs. The Big Bang Theory)
-50.00% - In the Dark
-75.00% - Katy Keene (vs. Supernatural)

Source: Nielsen Media Research, ShowBuzzDaily.com