For the Week of March 9, 2015

"Nightline" is #1 for the Week in All Key Target Demos

"Nightline" Ranks #1 in Total Viewers in 19 of Last 21 Weeks and Season to Date

"Nightline" Posts Week to Week and Year to Year Increases in Total Viewers and Adults 25-54

ABC News' "Nightline" ranked No. 1 in all key target demos: Total Viewers (1.739 million), Adults 25-54 (753,000) and Adults 18-49 (562,000) during the week of March 9, 2015, based on Live +Same Day Data from Nielsen Media Research. The ABC News late night program has ranked No. 1 in Total Viewers for the last 5 weeks and in 19 of the past 21.

"Nightline" increased from its week-ago performance (1.641 million and 737,000, respectively, on w/o 3/2/15) in both Total Viewers (+6%) and Adults 25-54 (+2%) . In fact, "Nightline" turned in its strongest news demo performance since November - since w/o 11/24/14 .

"Nightline" posted across-the-board, year-to-year gains (1.644 million, 674,000, and 553,000, respectively, on w/o 3/10/14): Total Viewers (+6%), Adults 25-54 (+12%) and Adults 18-49 (+2%) .

For the 2nd week in a row, "Nightline's" Thursday airing (3/12/15) was the week's No. 1 telecast in Total Viewers (2.166 million), Adults 25-54 (999,000) and Adults 18-49 (752,000), defeating every telecast of the week of CBS' "The Late Late Show" and NBC's "Late Night with Seth Meyers." Further, the Thursday telecast was the ABC program's strongest delivery in the key adult news demo in nearly 1 year - since 4/17/14.

Season to date, ABC News' "Nightline" ranks No. 1 in Total Viewers (1.711 million) , outdelivering CBS' average of "The Late Late Show with Craig Ferguson"/"The Late Late Show"/"The Talk - After Dark" (+320,000) and NBC's "Late Night with Seth Meyers" (+153,000) . In addition, "Nightline" is up by in Total Viewers (+2% - 1.711 million vs. 1.674 million) compared to the same point last season.

John Mayer was the guest host for CBS' "The Late Late Show" on Monday, Kunal Nayyar on Tuesday, Sean Hayes on Wednesday, Whitney Cummings on Thursday and Adam Pally on Friday.

ABC News' "Nightline" is anchored by Dan Harris, Juju Chang and Byron Pitts. Roxanna Sherwood is executive producer, and Steven Baker is Senior Broadcast Producer. The program airs weeknights from 12:35-1:05 a.m., ET on the ABC Television Network. Together with "Jimmy Kimmel Live," "Nightline" is part of ABC's winning late night strategy of airing news and entertainment programming.

Week of March 9, 2015:

PROGRAM AVERAGES TOTAL VIEWERS A25-54(000)/Rtg A18-49(000)/Rtg

ABC "Nightline" 1,739,000 753,000/0.6 562,000/0.4

CBS "The Late Late Show" 1,193,000 482,000/0.4 392,000/0.3

NBC "Late Night" 1,369,000 657,000/0.5 529,000/0.4

Source: The Nielsen Company, NTI Total Viewers, Adults 25-54 and Adults 18-49 Live + SD weeks of 3/9/15, 3/2/15 and 3/10/14. Most Current: 2014-2015 Season (9/22/14 - 3/15/15) and 2013-2014 Season (9/23/13 - 3/16/14). Averages based on regular telecasts. "Nightline" premiered in its new time period in January 2013.