Wednesday Primetime Results:

* At 8 p.m. ET, "Dateline NBC" (1.1/4 in 18-49, 5.2 million viewers overall) finished #2 in the slot among ABC, CBS, NBC and Fox in adults 18-49 and ranked #1 among those networks in total viewers versus mostly original competition on ABC, CBS and Fox. From its first half-hour to its second, "Dateline" grew by 20 percent in adults 18-49 (to a 1.2 rating from a 1.1), 15 percent in adults 25-54 (1.5 vs. 1.3) and 9 percent in total viewers (5.4 million vs. 5.0 million).

* At 9 p.m. ET, a rebroadcast of "Law & Order: Special Victims Unit" averaged a 1.0/3 in 18-49 and 4.7 million viewers overall. In total viewers, the 4.7 million is the biggest audience for an "SVU" encore since December 26, 2012 (5.5 million).

* At 10 p.m. ET, an encore telecast of "Chicago Fire" averaged a 0.7/23 in adults 18-49 and 3.0 million viewers overall. "Chicago Fire" maintained its rating from half-hour to half-hour in adults 18-49 (0.7 vs. 0.7) and adults 25-54 (1.0 vs. 1.0) and grew by 4 percent in total viewers (to 3.0 million from 2.9 million).

In Late-Night Metered Markets Wednesday night:

* In Nielsen's 56 metered markets, household results were: "The Tonight Show with Jay Leno," 2.4/6; CBS's "Late Show with David Letterman," 2.3/6; and ABC's "Jimmy Kimmel Live," 1.9/5 with an encore.

* In the 25 markets with Local People Meters, adult 18-49 Wednesday results were: "The Tonight Show with Jay Leno," 0.7/3; "Late Show," 0.6/3; and "Jimmy Kimmel Live," 0.7/3 with an encore.

* From 12:35-1:05 a.m. ET Wednesday night, ABC's "Nightline" averaged a 1.3/4 in metered-market households and a 0.4/2 in 18-49 in the Local People Meters.

* From 12:35-1:35 a.m. ET, "Late Night with Jimmy Fallon" (1.3/4 in metered-market households) beat CBS's "Late Late Show with Craig Ferguson" (1.1/4). In the 25 markets with Local People Meters, "Late Night" (0.4/3 in 18-49) topped "Late Late Show" (0.3/2).

* At 1:35 a.m., "Last Call with Carson Daly" averaged a 0.8/3 in metered-market households and a 0.3/2 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.