Thursday Primetime Results:

Despite fierce Thursday competition, "Parenthood" equaled its highest 18-49 rating since Oct. 3, 2013 and "Biggest Loser" retained 100% of its prior week's rating.

· "The Biggest Loser" (1.3/4 in 18-49, 4.5 million viewers overall from 8-10 p.m. ET) matched the previous week's 1.3 rating in adults 18-49 and retained 92% of last week's result in total viewers (4.467 million vs.4.618 million), despite facing last night's season premieres of ABC's "Grey's Anatomy" and "Scandal" and Fox's "Bones." From its first half-hour to its fourth, "Loser" grew by +15% in adults 18-49 (to a 1.5 from a 1.3), +25% in adults 18-34 (1.0 vs. 0.8) and +33% in women 18-34 (1.2 vs. 0.9).

· The sixth season premiere of "Parenthood" (1.4/4 in 18-49, 4.3 million viewers overall from 10-11 p.m. ET) equaled the show's highest adult 18-49 rating since Oct. 3, 2013 (1.5 during week two of last season). In total viewers, it's the show's best since March 27 (4.398 million).

· "Parenthood" improved by 8% on the show's April 17 season finale in 18-49 (1.4 vs. 1.3) and was up +7% in total viewers (4.262 million vs. 3.991 million). "Parenthood" retained 88% of its year-ago premiere in 18-49 (1.4 vs. 1.6 on Thursday, Sept. 26, 2013) and 84% in total viewers (4.262 million vs. 5.056 million), despite much tougher competition this year from the premiere of ABC's "How to Get Away With Murder" and CBS's NFL football.

Projected "Live Plus Three Day" and "Live Plus Seven Day" Results:

Adult 18-49 Rating
Show... L+SD... L+3...L+7
The Biggest Loser...1.3...1.8...1.9
Parenthood ...1.4...2.2...2.4

Persons 2+ (Total Viewers)
Show... L+SD... L+3...L+7
The Biggest Loser ... 4.5 million...5.4 million...5.6 million
Parenthood ... 4.3 million...6.4 million...6.8 million

In Late-Night Metered Markets Thursday Night:

· In Nielsen's 56 metered markets, household results were: "The Tonight Show Starring Jimmy Fallon," 2.5/7; CBS's "Late Show with David Letterman," 2.1/7 delayed by an NFL overrun; and ABC's "Jimmy Kimmel Live," 3.0/8.

· In the 25 markets with Local People Meters, adult 18-49 results were: "The Tonight Show Starring Jimmy Fallon," 0.9/4; "Late Show," 0.8/5 delayed by an NFL overrun; and "Jimmy Kimmel Live," 1.2/6.

· From 12:35-1:05 a.m. ET , ABC's "Nightline" averaged a 1.7/6 in metered-market households and a 0.7/5 in 18-49 in the Local People Meters.

· From 12:35-1:35 a.m. ET, "Late Night with Seth Meyers" (1.2/4 in metered-market households) trailed CBS's "Late Late Show with Craig Ferguson" (1.3/6 delayed by an NFL overrun). In the 25 markets with Local People Meters, "Late Night" (0.5/3 in 18-49) trailed "Late Late Show" (0.6/5 delayed by an NFL overrun).

· At 1:35 a.m. ET , "Last Call with Carson Daly" averaged a 0.7/3 in metered-market households and a 0.2/2 in adults 18-49 in the 25 markets with local people meters.

NOTE: All ratings are "live plus same day" from Nielsen Media Research unless otherwise indicated.