2012 olympics ratings aug 9 TV ratings: Olympics fall significantly Thursday as games start winding downFast National ratings for Thursday, Aug. 9, 2012

NBC’s coverage of the Olympics hit its lowest mark of the 2012 Summer Games Thursday night. The Peacock still dominated the night as viewers watched Usain Bolt win his second straight 200-meter gold medal.

The lower ratings for the games allowed a couple other shows to get back to their normal levels. CBS’ “Big Brother” and ABC’s “Rookie Blue” climbed back to their non-Olympic levels. (Pending updates, anyway: Some local markets carried NFL preseason games.)

NBC drew 22.4 million viewers and a 13.4 rating/22 share in households in primetime, its smallest audience for this Olympics by several million viewers. CBS (5.8 million, 3.8/6) came in second, beating out ABC (5.1 million, 3.0/5). FOX finished fourth with 2.7 million viewers and a 1.7/3. The CW (774,000, 0.5/1) trailed.

NBC also took a hit in the adults 18-49 demographic, although its 6.8 rating was still more than the other four networks combined. CBS, 1.7, edged ABC, 1.6, for second place. FOX scored a 1.0 in the demo and The CW a 0.3.

]]>8 p.m. NBC: Summer Olympics (19.15 million viewers, 11.6/20 households)
CBS: “The Big Bang Theory” rerun (6.9 million, 4.5/8)/”Two and a Half Men” rerun (6.2 million, 4.0/7)
ABC: “Wipeout” rerun (5.3 million, 3.1/5)
FOX: “Raising Hope” reruns – two episodes (2.7 million, 1.7/3)
The CW: “The Vampire Diaries” rerun (922,000, 0.6/1) 18-49 leader: Summer Olympics (5.4) 9 p.m. NBC: Summer Olympics (24.5 million, 14.5/23)
CBS: “Big Brother” (6.2 million, 4.0/6)
ABC: “Wipeout” (4.8 million, 2.8/4)
FOX: “Glee” rerun (2.75 million, 1.8/3)
The CW: “The L.A. Complex” rerun (626,000, 0.4/1) 18-49 leader: Summer Olympics (7.3) 10 p.m. NBC: Summer Olympics (23.6 million, 14.1/23)
ABC: “Rookie Blue” (5 million, 3.2/5)
CBS: “Person of Interest” rerun (4.7 million, 3.1/5) 18-49 leader: Summer Olympics (7.6) Ratings information includes live and same-day DVR viewing. All numbers are preliminary and subject to change. Source: The Nielsen Company. More ratings at Zap2it: Daily, weekly and cable