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

Here are the highlights of the nine ad-sustained programs that aired in primetime on the broadcast networks last night (4/17/21):

ABC (1.840 million viewers, #2; adults 18-49: 0.4, #1) took home the demo crown on Saturday with its presentations of "NBA Countdown" (1.688 million viewers, #6; adults 18-49: 0.3, #T2) and "NBA Saturday Primetime on ABC" (1.870 million viewers, #4; adults 18-49: 0.4, #1).

CBS (2.269 million viewers, #1; adults 18-49: 0.2, #T2) was the most-watched broadcaster with its mix of "NCIS: Los Angeles" (2.200 million viewers, #3; adults 18-49: 0.2, #T4), "NCIS: New Orleans" (2.266 million viewers, #2; adults 18-49: 0.2, #T4) and a new "48 Hours" (2.342 million viewers, #1; adults 18-49: 0.2, #T4).

Next up was NBC (1.596 million viewers, #3; adults 18-49: 0.2, #T2) with its trio of "Law & Order: Special Victims Unit" (1.491 million viewers, #7; adults 18-49: 0.2, #T4), "Law & Order: Organized Crime" (1.432 million viewers, #8; adults 18-49: 0.2, #T4) and "SNL Vintage" (1.864 million viewers, #5; adults 18-49: 0.3, #T2).

And finally, FOX (0.639 million viewers, #4; adults 18-49: 0.1, #4) closed out the night with its primetime coverage of "PBC Fight Night" (0.639 million viewers, #9; adults 18-49: 0.1, #9).

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

NBC (4.676 million viewers, #1; adults 18-49: 0.8, #T1) was the network to beat on Saturday with its coverage of "One World: Together at Home" (5.346 million viewers, #1; adults 18-49: 0.9, #T1) alongside "SNL Vintage" (3.336 million viewers, #5; adults 18-49: 0.6, #4).

ABC (4.274 million viewers, #2; adults 18-49: 0.8, #T1) shared in the demo honors with its telecast of "One World: Together at Home" (5.176 million viewers, #2; adults 18-49: 0.9, #T1) plus a rebroadcast of "The Baker and the Beauty" (2.469 million viewers, #6; adults 18-49: 0.5, #T5).

Next up was CBS (3.924 million viewers, #3; adults 18-49: 0.6, #3) and its presentation of "One World: Together at Home" (4.097 million viewers, #3; adults 18-49: 0.7, #3) followed by a new "48 Hours" (3.577 million viewers, #4; adults 18-49: 0.5, #T5).

And finally, repeats of "9-1-1" (1.271 million viewers, #7; adults 18-49: 0.2, #8) and "Gordon Ramsay's 24 Hours to Hell and Back" (1.068 million viewers, #8; adults 18-49: 0.3, #7) closed out the evening on FOX (1.170 million viewers, #4; adults 18-49: 0.3, #4).

In late-night metered market ratings (via NBC's press release):

TBA

Source: Nielsen Media Research, ShowBuzzDaily.com