Fast National ratings for Thursday, Oct. 4, 2007

CBS sat alone atop the ratings heap Thursday, pulling out a win over ABC, which saw its "Big Shots" get smaller. NBC's "30 Rock," meanwhile, got a ratings bump on the heels of its Emmy win.

For the night, CBS averaged a 10.2 rating/16 share, beating ABC's 8.3/13. NBC finished third at 5.3/9. FOX, 4.5/7, took fourth, and The CW trailed with a 2.4/4.

A tight adults 18-49 race also went to CBS, which drew a 4.9 rating in the advertisers' favorite demographic. ABC was right behind at 4.8. NBC, 3.8, came in third, followed by FOX, 2.1, and The CW, 1.5.

"Survivor: China," 8.5/14, put CBS on top at 8 p.m. "Ugly Betty," 6.6/11, was second for ABC. FOX grabbed third overall with "Are You Smarter Than a Fifth Grader?," although NBC did better in the 18-49 demo with "My Name Is Earl," 5.1/9, and the "30 Rock" premiere, 4.8/7. The introduction of Supergirl on "Smallville" earned a 2.9/5 for The CW.

CBS got a 12.8/19 from "CSI" at 9 p.m. "Grey's Anatomy," 12.3/19, kept ABC in second (and was the night's top show among adults 18-49). "The Office" posted a 5.0/8 for NBC, topping "Kitchen Nightmares" on FOX. The season premiere of "Supernatural" earned a 2.0/3 for The CW.

"Without a Trace" finished off the CBS sweep with a 9.4/16 at 10 p.m. "ER" scored a 6.1/10 for NBC, tying for second with ABC's "Big Shots," which bled more than half of its lead-in audience.

Ratings information is taken from fast national data, which includes live and same-day DVR viewing. All numbers are preliminary and subject to change.