RATINGS: March Madness Takes CBS to the Top on Thursday

CBS (3.851 million viewers, #2; adults 18-49: 1.0, #1) was the adults 18-49 champ on Thursday thanks to its first round coverage of "NCAA Men's Basketball Tournament" (3.904 million viewers, #4; adults 18-49: 1.0, #3) and another "NCAA Men's Basketball Tournament" (3.798 million viewers, #6; adults 18-49: 1.1, #2).

ABC (5.216 million viewers, #1; adults 18-49: 0.9, #2) then was a close second with originals from "Grey's Anatomy" (6.891 million viewers, #1; adults 18-49: 1.4, #1), "Station 19" (5.600 million viewers, #2; adults 18-49: 0.9, #T4) and "For the People" (3.156 million viewers, #7; adults 18-49: 0.5, #T11).

Next up was NBC (3.322 million viewers, #3; adults 18-49: 0.7, #3) with new episodes of "Superstore" (3.887 million viewers, #5; adults 18-49: 0.9, #T4), "AP Bio" (2.329 million viewers, #10; adults 18-49: 0.5, #T11), "Brooklyn Nine-Nine" (2.230 million viewers, #12; adults 18-49: 0.6, #T8), "Will & Grace" (2.955 million viewers, #8; adults 18-49: 0.7, #7) and "Law & Order: Special Victims Unit" (4.265 million viewers, #3; adults 18-49: 0.8, #6).

Meanwhile, FOX (2.589 million viewers, #4; adults 18-49: 0.6, #4) offered up new episodes of "Gotham" (2.231 million viewers, #11; adults 18-49: 0.6, #T8) and "The Orville" (2.947 million viewers, #9; adults 18-49: 0.6, #T8).

And finally, The CW (1.240 million viewers, #5; adults 18-49: 0.3, #5) closed out the night with new episodes of "Supernatural" (1.467 million viewers, #13; adults 18-49: 0.4, #13) and "Legacies" (1.013 million viewers, #14; adults 18-49: 0.3, #14).

Week-to-week changes (adults 18-49):
+16.67% - Will & Grace
+12.50% - Station 19
0.00% - Grey's Anatomy
0.00% - Law & Order: Special Victims Unit
0.00% - THE ORVILLE (vs. 3/7/19)
0.00% - Gotham (vs. 3/7/19)
0.00% - Supernatural
0.00% - Legacies
-10.00% - Superstore
-14.29% - Brooklyn Nine-Nine
-16.67% - For the People
-16.67% - AP Bio

Year-to-year changes (adults 18-49):
+50.00% - LEGACIES (vs. ARROW (Repeat))
+33.33% - Supernatural (vs. Supernatural (Repeat))
0.00% - THE ORVILLE (vs. Showtime at the Apollo)
-14.29% - Gotham
-18.18% - Superstore
-25.00% - Station 19
-26.32% - Grey's Anatomy
-28.57% - AP Bio
-33.33% - Law & Order: Special Victims Unit (vs. Chicago Fire)
-41.67% - Will & Grace (vs. Chicago Fire)
-50.00% - BROOKLYN NINE-NINE (vs. Chicago Fire)
-54.55% - FOR THE PEOPLE (vs. Station 19)

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

· In Nielsen's 56 metered markets, household results were: "The Tonight Show Starring Jimmy Fallon," 1.9/5; "Late Show with Stephen Colbert," 1.5/5 with an encore delayed by NCAA basketball; and ABC's "Jimmy Kimmel Live," 2.0/5.

· In the 25 markets with Local People Meters, adult 18-49 results were: "The Tonight Show Starring Jimmy Fallon," 0.4/3; "Late Show," 0.4/3 with an encore delayed by NCAA basketball; and "Jimmy Kimmel Live," 0.4/2.

· From 12:35-1:05 a.m. ET, ABC's "Nightline" averaged a 1.0/4 in metered-market households and a 0.2/2 in 18-49 in the Local People Meters.

· From 12:35-1:35 a.m. ET, ratings were: "Late Night with Seth Meyers," 1.1/4 in metered-market households; CBS's "Late Late Show," 0.9/4 with an encore delayed by NCAA basketball. In the 25 markets with Local People Meters, averages were: "Late Night," 0.3/2 in 18-49; "Late Late Show," 0.2/2 with an encore delayed by NCAA basketball.

· At 1:35 a.m., "Last Call with Carson Daly" averaged a 0.6/3 in metered-market households and a 0.2/2 in adults 18-49 in the 25 markets with local people meters.