Continuing a weeklong trend that has seen declines for reality series on the broadcast networks, ABC’s ”Duets” and ”Wipeout” joined CBS’ ”Big Brother” in dropping off Thursday. ABC’s ”Rookie Blue” was a rare bright spot on the night, hitting a seven-week high.

CBS, which won Thursday across the board, opened the night with potent comedy ”The Big Bang Theory” (2.4/9 in 18-49, 8.9 million viewers overall) , the night’s top show even in repeat , and followed it up with the timeslot debut of ”Two and a Half Men” (2.1/7 in 18-49, 7.4 million viewers overall), which retained most of its lead-in. At 9, ”Big Brother” (2.2/7 in 18-49, 6.3 million viewers overall) dropped 15% from last week but still led its hour in all key categories and was the night’s No. 1 original program. Closing things out was an encore of drama ”Person of Interest” (1.0/3 in 18-49, 5.2 million viewers overall).

Univision ranked second on the night in 18-49 with its three-hour telecast of the Premios Juventud youth awards (1.5/5 in 18-49, 3.8 million viewers overall), hosted by Wilmer Valderrama and Alicia Machado. The Spanish-language net won the night among adults 18-34 (1.7/7).

At ABC, ”Duets” finished its run with a 0.9/3 in 18-49 and 4.5 million viewers overall, down week to week for its lowest score in the demo. ”Wipeout” was also low at 9 p.m. (1.6/5 in 18-49, 5.0 million viewers overall), but cop drama ”Rookie Blue” edged up (1.4/4 in 18-49, 5.0 million viewers overall) and won the 10 o’clock hour in demos over both ABC and CBS.

Fox’s dating show ”Take Me Out” held steady leading off the night (1.2/4 in 18-49, 3.1 million viewers overall), and was followed by repeats of ”New Girl” at 9 (1.0/3 in 18-49, 2.4 million viewers overall) and 9:30 (1.1/3 in 18-49, 2.3 million viewers overall).

NBC had a quiet night all around, garnering 2 shares with each program. Following repeats of ”The Office” (0.6/2 in 18-49, 2.0 million viewers overall) and ”Parks and Recreation” (0.6/2 in 18-49, 1.6 million viewers overall), original drama ”Saving Hope” (0.5/2 in 18-49, 3.0 million viewers overall) was flat week to week and newsmagazine ”Rock Center” was down (0.7/2 in 18-49, 3.4 million viewers overall).

Preliminary 18-49 averages for the night: CBS, 1.8/6; Univision, 1.5/5; ABC, 1.3/4; Fox, 1.1/4; NBC, 0.6/2; CW, 0.2/1.

In total viewers: CBS, 6.5 million; ABC, 4.8 million; Univision, 3.8 million; NBC and Fox, 2.7 million; CW, 0.6 million.